Arbeitsgruppe Kuiper - User contributions [en]

Online Tools

2025-09-24T15:24:23Z

Gabriel: Typo, typography

= Classical =

* [https://www.wolframalpha.com Wolfram Alpha](€): Mathematics (including complicated things :)), looking up facts, converting units (which Google also can do), etc.
* [https://colorbrewer2.org Colour brewer]: Some curated nice and clear schemes for maps (2D plots) but also finite numbers of curves
* [https://svo2.cab.inta-csic.es/svo/theory/fps/index.php Filter Profile Service] of the Spanish Virtual Observatory: Filters (for photometry) for any instrument on any telescope…
* [https://svo2.cab.inta-csic.es/svo/theory/newov2/index.php Theoretical spectra]: Spectra for planets and stars from maaaany different models
* [https://apps.automeris.io/wpd4/ Webplot Digitizer]: Extract data from plots

= AI-based =

* [https://www.uni-due.de/de/digitalisierung/ki-portal/chat-ai-login.php ChatAI]🎓 of the [https://academiccloud.de Academic Cloud] with many different LLMs (see also the [https://www.uni-due.de/de/digitalisierung/ki-portal portal])
* [https://claude.ai Claude]
* [https://www.writefull.com Writefull]€, integrated into [https://www.overleaf.com Overleaf]

= Literature research =

* [https://ui.adsabs.harvard.edu/ NASA/ADS] with searches of papers citing a certain work: citation(bibcode:…)
* [https://www.webofscience.com/wos/woscc/smart-search Web of Science/Science Citation Index Expanded]🎓

= Notes =

€: premium/pro account necessary for serious work 
(€): premium/pro account possible, serious work can still be done with free version 
🎓: payed for by the university, needs UDE login

From [https://www.wolframalpha.com/faqs the FAQ page at Wolfram|alpha] (the service is some 20 years old!): 
"''Does Wolfram|Alpha use artificial intelligence?'' 
Not in a traditional sense. Wolfram|Alpha isn't mainly based on emulating human reasoning. Instead it uses powerful methods from science and algorithmic computation to get directly to answers." 

"''Is Wolfram|Alpha an artificial intelligence?'' 
"It's much more an engineered artifact than a humanlike artificial intelligence. Some of what it does—especially in language understanding—may be similar to what humans do. But its primary objective is to do directed computations, not to act as a general intelligence."

Online Tools

2025-09-24T15:23:29Z

Gabriel: Ein paar Dienste hinzugefügt

= Classical =

* [https://www.wolframalpha.com Wolfram Alpha](€): Mathematics (including complicated things :)), looking up facts, converting units (which Google also can do), etc.
* [https://colorbrewer2.org Colour brewer] Some curated nice and clear schemes for maps (2D plots) but also finite numbers of curves
* [https://svo2.cab.inta-csic.es/svo/theory/fps/index.php Filter Profile Service] of the Spanish Virtual Observatory Filters (for photometry) for any instrument on any telescope…
* [https://svo2.cab.inta-csic.es/svo/theory/newov2/index.php Theoretical spectra] for planets and stars
* [https://apps.automeris.io/wpd4/ Webplot Digitizer] Extra data from plots

= AI-based =

* [https://www.uni-due.de/de/digitalisierung/ki-portal/chat-ai-login.php ChatAI]🎓 of the [https://academiccloud.de Academic Cloud] with many different LLMs (see also the [https://www.uni-due.de/de/digitalisierung/ki-portal portal])
* [https://claude.ai Claude]
* [https://www.writefull.com Writefull]€, integrated into [https://www.overleaf.com Overleaf]

= Literature research =

* [https://ui.adsabs.harvard.edu/ NASA/ADS] with searches of papers citing a certain work: citation(bibcode:…)
* [https://www.webofscience.com/wos/woscc/smart-search Web of Science/Science Citation Index Expanded]🎓

= Notes =

€: premium/pro account necessary for serious work 
(€): premium/pro account possible, serious work can still be done with free version 
🎓: payed for by the university, needs UDE login

From [https://www.wolframalpha.com/faqs the FAQ page at Wolfram|alpha] (the service is some 20 years old!): 
"''Does Wolfram|Alpha use artificial intelligence?'' 
Not in a traditional sense. Wolfram|Alpha isn't mainly based on emulating human reasoning. Instead it uses powerful methods from science and algorithmic computation to get directly to answers." 

"''Is Wolfram|Alpha an artificial intelligence?'' 
"It's much more an engineered artifact than a humanlike artificial intelligence. Some of what it does—especially in language understanding—may be similar to what humans do. But its primary objective is to do directed computations, not to act as a general intelligence."

Online Tools

2025-09-24T15:11:31Z

Gabriel: Wolfram|alpha benutzt keine künstliche Intelligenz! Und mit NASA ergänzt – dadurch findet man schon sehr viel!

= Not AI-based =

* [https://www.wolframalpha.com Wolfram Alpha](€)

= AI-based =

* [https://www.uni-due.de/de/digitalisierung/ki-portal/chat-ai-login.php ChatAI]🎓 of the [https://academiccloud.de Academic Cloud] with many different LLMs (see also the [https://www.uni-due.de/de/digitalisierung/ki-portal portal])
* [https://claude.ai Claude]
* [https://www.writefull.com Writefull]€, integrated into [https://www.overleaf.com Overleaf]

= Literature research =

* [https://ui.adsabs.harvard.edu/ NASA/ADS] with searches of papers citing a certain work: citation(bibcode:…)
* [https://www.webofscience.com/wos/woscc/smart-search Web of Science/Science Citation Index Expanded]🎓

= Notes =

€: premium/pro account necessary for serious work 
(€): premium/pro account possible, serious work can still be done with free version 
🎓: payed for by the university, needs UDE login

From [https://www.wolframalpha.com/faqs the FAQ page at Wolfram|alpha] (the service is some 20 years old!): 
"''Does Wolfram|Alpha use artificial intelligence?'' 
Not in a traditional sense. Wolfram|Alpha isn't mainly based on emulating human reasoning. Instead it uses powerful methods from science and algorithmic computation to get directly to answers." 

"''Is Wolfram|Alpha an artificial intelligence?'' 
"It's much more an engineered artifact than a humanlike artificial intelligence. Some of what it does—especially in language understanding—may be similar to what humans do. But its primary objective is to do directed computations, not to act as a general intelligence."

Papers

2024-05-14T13:51:38Z

Gabriel: Zwei Artikel

Interesting papers can be put here. Please:
* Indicate the title and some author information
* Put a link to the '''abstract page, not to the PDF''' (better for many reasons) 
* Within a subject, sort by descending chronological order of addition (i.e., newest on top)
* Put comments and discussions on the page [[Talk:Papers|Discussion]].

Enjoy reading!

== Stars ==

* Balmer et al. 2023, [https://arxiv.org/abs/2312.08283 "VLTI/GRAVITY Provides Evidence the Young, Substellar Companion HD 136164 Ab formed like a “Failed Star”"]

* Young 2023, [https://arxiv.org/abs/2312.03039 "Insights into the first and second hydrostatic core stages from numerical simulations"]

* López-Vázquez et al., [https://arxiv.org/abs/2312.03272 "Multiple shells driven by disk winds: ALMA observations in the HH 30 outflow"]

== Discs ==

* Cecil, Gehrig & Steiner 2024, [https://arxiv.org/abs/2405.05816 "Time-dependent long-term hydrodynamic simulations of the inner protoplanetary disk III: The influence of photoevaporation"]

* Fenton & Stamatellos 2024, [https://arxiv.org/abs/2402.01432 "The 3D structure of disc-instability protoplanets"]

* Takakuwa et al. 2024, [https://arxiv.org/abs/2401.08722 "Early Planet Formation in Embedded Disks (eDisk) XIV: Flared Dust Distribution and Viscous Accretion Heating of the Disk around R CrA IRS 7B-a"]

* Ren et al. 2024, [https://arxiv.org/abs/2310.15430 "A Companion in V1247 Ori Supported by Spiral Arm Pattern Motion"]

* Lim et al 2023, [https://arxiv.org/abs/2312.12508 "Streaming Instability and Turbulence: Conditions for Planetesimal Formation"]

* Jiang et al. 2023, [https://ui.adsabs.harvard.edu/abs/2023A%2526A...678A..33J "Chemical footprints of giant planet formation. Role of planet accretion in shaping the C/O ratio of protoplanetary disks"]

* Ashraf et al. 2023, [https://arxiv.org/abs/2312.10827 "An outburst and FU Ori-type disk of a former low luminosity protostar"]

* Guadarrama et al. 2023, [https://arxiv.org/abs/2312.07184 "The influence of accretion bursts on methanol and water in massive young stellar objects"]

* Fuksman et al. 2023, [https://arxiv.org/abs/2312.06882 "Vertical shear instability in two-moment radiation-hydrodynamical simulations of irradiated protoplanetary disks I. Angular momentum transport and turbulent heating"]

* Fuksman et al. 2023, [https://arxiv.org/abs/2312.06890 "Vertical shear instability in two-moment radiation-hydrodynamical simulations of irradiated protoplanetary disks II. Secondary instabilities and stability regions"]

* Higginbottom et al., [https://arxiv.org/abs/2312.06042 "State-of-the-art simulations of line-driven accretion disc winds: realistic radiation-hydrodynamics leads to weaker outflows"]

* Nixon et al., [https://arxiv.org/abs/2312.04400 "On the role of numerical diffusivity in MHD simulations of global accretion disc dynamos"]

* Stapper et al., [https://arxiv.org/abs/2312.03835 "Constraining the gas mass of Herbig disks using CO isotopologues"]

* Paneque-Carreño et al., [https://arxiv.org/abs/2312.04618 "High turbulence in the IM Lup protoplanetary disk: Direct observational constraints from CN and C_2H emission"]

* Chen et al., [https://arxiv.org/abs/2310.13690 "Planet Gap-opening Feedback on Disk Thermal Structure and Composition"]

* Cattolico & Perets, [https://arxiv.org/abs/2310.11583 "Dynamical evolution of second-generation circumstellar/protoplanetary disks in evolved wide binary systems"]

== Planets ==

* Zhang 2024, [https://iopscience.iop.org/article/10.3847/2515-5172/ad4481 "Initial Entropy and Potential Delayed Formation of the Directly Imaged Exoplanet AF Lep b"]

* Savignac & Lee 2024, [https://arxiv.org/abs/2310.06013 "The Not-So Dramatic Effect of Advective Flows on Gas Accretion"]

* Krapp et al. 2024, [https://arxiv.org/abs/2402.14638 "A thermodynamic criterion for the formation of Circumplanetary Disks"]

* Andama et al. 2024, [https://arxiv.org/abs/2401.16155 "What stars can form planets: planetesimal formation at low"]

* Law et al. 2024, [https://arxiv.org/abs/2401.03018 "Mapping the Vertical Gas Structure of the Planet-hosting PDS 70 Disk"]

* Lorek & Johansen 2024, [https://arxiv.org/abs/2401.05101 "Formation of flattened planetesimals by gravitational collapse of rotating pebble clouds"]

* Burn et al. 2024, [https://arxiv.org/abs/2401.04380 "A radius valley between migrated steam worlds and evaporated rocky cores"]

* Jones et al. 2024, [https://arxiv.org/abs/2401.09657 "A long-period transiting substellar companion in the super-Jupiters to brown dwarfs mass regime and a prototypical warm-Jupiter detected by TESS"]

* Xu & Wang 2024, [https://arxiv.org/abs/2401.06217 "Earths are not Super-Earths, Saturns are not Jupiters: Imprints of pressure-bump planet formation on planetary architectures"]

* Portegies Zwart & Hochart, [https://arxiv.org/abs/2312.04645 "The origin and evolution of wide Jupiter Mass Binary Objects in young stellar clusters"]

== Small things ==

* Birnstiel 2023, [https://arxiv.org/abs/2312.13287 "Dust growth and evolution in protoplanetary disks"]

* Dominik and Dullemond 2023, [https://arxiv.org/abs/2312.06000 "The bouncing barrier revisited: Impact on key planet formation processes and observational signatures"]

* Houge et al., [https://arxiv.org/abs/2312.01856 "Surviving the Heat: multi-wavelength analysis of V883 Ori reveals that dust aggregates survive the sublimation of their ice mantles"]

== Other (including ornithology) ==

* Van Wassenbergh & Mielke (2024), [https://doi.org/10.1063/PT.3.5385 "Why woodpeckers don’t get concussions"], Physics Today (''short read'')
* Dib & Menou, [https://arxiv.org/abs/2312.02091 "Physics simulation capabilities of LLMs"]
* Keto (2020), [https://doi.org/10.1093/mnras/staa529 "Stability and solution of the time-dependent Bondi–Parker flow"]
* Bratley & Fox (1988), [https://doi.org/10.1145/42288.214372 "Algorithm 659: Implementing Sobol's quasirandom sequence generator"]
* Smith (1987), [https://doi.org/10.1090/QAM%2F910459 "A note on the Stokes paradox"]

Software

2024-04-19T19:45:50Z

Gabriel: tex_compact_bib hinzugefügt

== Overview ==
* Astro stuff:
** [https://git.uni-due.de/agkuiper/belt Belt] (which needs [[PETSc]]): Rolf's PLUTO version ([[compile-belt|manual]] for compiling)
** [[Visit]] Tips and tricks
** [[pyPLUTO]]: a Python module to read and analyse PLUTO output
* [[Software#Two-Factor Authentification|Two-Factor Authentification (2FA)]]
* [[VPN]]
* [[SSH and SCP]]
* [https://git.uni-due.de/ University Gitlab]
* [https://uni-due.zoom.us/profile University Zoom]
* [https://nxcl.e-services.physik.uni-due.de University Nextcloud]: This is where we have the group calendar as well!
* [https://www.uni-due.de/zim/services/software/office-ma.php MS Office]. Note that [https://www.libreoffice.org/ LibreOffice] (Windows, Linux; use package manager) is an excellent and free alternative but ''caveat emptor'' about some formatting compatibilities.
* [[Zotero]]
* Making bibliographies compact (e.g. for proposals): https://github.com/lmytime/tex_compact_bib

== Two-Factor Authentification ==
The two-factor authentification (2FA) is needed for most university services as VPN or Nextcloud.

After activating your user-ID you need to activate it in the selfcare portal (https://selfcare.uni-due.de/). The website will walk you through the installation. You'll need to have e.g. an app for the generation of the second factor. I recommend using the app OpenOTP. Please make sure that you scan the shown QR-codes, they are very hard to regain.

However, it is also possible to do it without a phone or application. For this, you only need to install forcepoint and oathtool. Then, you call:
~$ sudo forcepoint-client vpn.uni-due.de
Enter your normal/central university username and password. Then, if warnings come, say yes, and it will ask you for the second factor. Copy the timestamp for the line <code>*** Please enter reply for challenge ***</code> and run—in the same terminal after having paused forcepoint (Ctrl+Z, then "bg", then <Enter>) or in a separate terminal—the following command:
~$ oathtool --totp -b <YOUR "SECRET"> --now="<TIMESTAMP GIVEN BY FORCEPOINT>"
It will return a six-digit number that you then give to forcepoint (<code>fg</code> to bring it back to the foreground, or switching to the tab). You have all the time in the world because you are giving the timestamp explicitly :). You get the "secret" from the selfcare portal when you generate a token (the QR code is just an URL and there is a "…?secret=…&" part to it; the string between "=" and "&" is the "secret").

In general, to parse a QR code: you can use <code>zbarimg</code>, e.g. from a quick screenshot:
~$ zbarimg "/home/georgeslemaistre/Bilder/Bildschirmfoto von 2023-10-05 15-00-00.png"
otpauth://totp/TOTP1938HK33?secret=33IHS343AMDGPH123456CO777JPIIJMJV&period=30&digits=6&issuer=uni-duisburg-essen&image=https%3A//selfcare.uni-due.de/_Resources/Static/Packages/UDE.Portal/images/logo/logo--otp.png
(No worries, this is a fake "secret" :).)

'''Important''': make sure to execute the oathtool command prefixed with a space on the command line so that it not get saved to your command history file because your "secret" is in plain text there. You can call the command once without writing the "secret" (which of course will not work) just to have the command in the history (searching in the history on the command line: <code>Ctrl</code>+<code>R</code>). Typically, you need to close the terminal (exit) for the history actually to be written to the history file (~/.bash_history if you are using bash.) Saving the secret itself in plain text is not the best idea, obviously, so you need to find a solution for that part…

If you forgot to use a space at the beginning of the line and the terminal is still open, go up in command history with the up arrow until you get to that command, delete the command on the line and '''do not press enter''' but first go back "down to the present" with the down arrow and '''then''' press enter. You can check that it has worked by going back up (with the up arrow) and you will see a blank line where the command was. Then you can exit. If you have already closed the terminal, open the history file in an editor and delete the line but make sure that no back-up copy of the history file (containing the command...) is made, or delete it manually afterwards.

Papers

2024-04-19T19:43:07Z

Gabriel: Planetenartikel

Interesting papers can be put here. Please:
* Indicate the title and some author information
* Put a link to the '''abstract page, not to the PDF''' (better for many reasons) 
* Within a subject, sort by descending chronological order of addition (i.e., newest on top)
* Put comments and discussions on the page [[Talk:Papers|Discussion]].

Enjoy reading!

== Stars ==

* Balmer et al. 2023, [https://arxiv.org/abs/2312.08283 "VLTI/GRAVITY Provides Evidence the Young, Substellar Companion HD 136164 Ab formed like a “Failed Star”"]

* Young 2023, [https://arxiv.org/abs/2312.03039 "Insights into the first and second hydrostatic core stages from numerical simulations"]

* López-Vázquez et al., [https://arxiv.org/abs/2312.03272 "Multiple shells driven by disk winds: ALMA observations in the HH 30 outflow"]

== Discs ==

* Fenton & Stamatellos 2024, [https://arxiv.org/pdf/2402.01432.pdf "The 3D structure of disc-instability protoplanets"]

* Takakuwa et al. 2024, [https://arxiv.org/abs/2401.08722 "Early Planet Formation in Embedded Disks (eDisk) XIV: Flared Dust Distribution and Viscous Accretion Heating of the Disk around R CrA IRS 7B-a"]

* Ren et al. 2024, [https://arxiv.org/abs/2310.15430 "A Companion in V1247 Ori Supported by Spiral Arm Pattern Motion"]

* Lim et al 2023, [https://arxiv.org/abs/2312.12508 "Streaming Instability and Turbulence: Conditions for Planetesimal Formation"]

* Jiang et al. 2023, [https://ui.adsabs.harvard.edu/abs/2023A%2526A...678A..33J "Chemical footprints of giant planet formation. Role of planet accretion in shaping the C/O ratio of protoplanetary disks"]

* Ashraf et al. 2023, [https://arxiv.org/abs/2312.10827 "An outburst and FU Ori-type disk of a former low luminosity protostar"]

* Guadarrama et al. 2023, [https://arxiv.org/abs/2312.07184 "The influence of accretion bursts on methanol and water in massive young stellar objects"]

* Fuksman et al. 2023, [https://arxiv.org/abs/2312.06882 "Vertical shear instability in two-moment radiation-hydrodynamical simulations of irradiated protoplanetary disks I. Angular momentum transport and turbulent heating"]

* Fuksman et al. 2023, [https://arxiv.org/abs/2312.06890 "Vertical shear instability in two-moment radiation-hydrodynamical simulations of irradiated protoplanetary disks II. Secondary instabilities and stability regions"]

* Higginbottom et al., [https://arxiv.org/abs/2312.06042 "State-of-the-art simulations of line-driven accretion disc winds: realistic radiation-hydrodynamics leads to weaker outflows"]

* Nixon et al., [https://arxiv.org/abs/2312.04400 "On the role of numerical diffusivity in MHD simulations of global accretion disc dynamos"]

* Stapper et al., [https://arxiv.org/abs/2312.03835 "Constraining the gas mass of Herbig disks using CO isotopologues"]

* Paneque-Carreño et al., [https://arxiv.org/abs/2312.04618 "High turbulence in the IM Lup protoplanetary disk: Direct observational constraints from CN and C_2H emission"]

* Chen et al., [https://arxiv.org/abs/2310.13690 "Planet Gap-opening Feedback on Disk Thermal Structure and Composition"]

* Cattolico & Perets, [https://arxiv.org/abs/2310.11583 "Dynamical evolution of second-generation circumstellar/protoplanetary disks in evolved wide binary systems"]

== Planets ==

* Savignac & Lee 2024, [https://arxiv.org/abs/2310.06013 "The Not-So Dramatic Effect of Advective Flows on Gas Accretion"]

* Krapp et al. 2024, [https://arxiv.org/abs/2402.14638 "A thermodynamic criterion for the formation of Circumplanetary Disks"]

* Andama et al. 2024, [https://arxiv.org/abs/2401.16155 "What stars can form planets: planetesimal formation at low"]

* Law et al. 2024, [https://arxiv.org/abs/2401.03018 "Mapping the Vertical Gas Structure of the Planet-hosting PDS 70 Disk"]

* Lorek & Johansen 2024, [https://arxiv.org/abs/2401.05101 "Formation of flattened planetesimals by gravitational collapse of rotating pebble clouds"]

* Burn et al. 2024, [https://arxiv.org/abs/2401.04380 "A radius valley between migrated steam worlds and evaporated rocky cores"]

* Jones et al. 2024, [https://arxiv.org/pdf/2401.09657.pdf "A long-period transiting substellar companion in the super-Jupiters to brown dwarfs mass regime and a prototypical warm-Jupiter detected by TESS"]

* Xu & Wang 2024, [https://arxiv.org/pdf/2401.06217.pdf "Earths are not Super-Earths, Saturns are not Jupiters: Imprints of pressure-bump planet formation on planetary architectures"]

* Portegies Zwart & Hochart, [https://arxiv.org/abs/2312.04645 "The origin and evolution of wide Jupiter Mass Binary Objects in young stellar clusters"]

== Small things ==

* Birnstiel 2023, [https://arxiv.org/abs/2312.13287 "Dust growth and evolution in protoplanetary disks"]

* Dominik and Dullemond 2023, [https://arxiv.org/abs/2312.06000 "The bouncing barrier revisited: Impact on key planet formation processes and observational signatures"]

* Houge et al., [https://arxiv.org/abs/2312.01856 "Surviving the Heat: multi-wavelength analysis of V883 Ori reveals that dust aggregates survive the sublimation of their ice mantles"]

== Other (including ornithology) ==

* Van Wassenbergh & Mielke (2024), [https://doi.org/10.1063/PT.3.5385 "Why woodpeckers don’t get concussions"], Physics Today (''short read'')
* Dib & Menou, [https://arxiv.org/abs/2312.02091 "Physics simulation capabilities of LLMs"]
* Keto (2020), [https://doi.org/10.1093/mnras/staa529 "Stability and solution of the time-dependent Bondi–Parker flow"]

Main Page

2024-04-16T05:41:25Z

Gabriel: Konferenzlisten bewerben

====== Herzlich willkommen zum Wiki der AG Kuiper! Welcome to the Wiki of AG Kuiper! ======
Here you find some general information and helpful links for your start in Duisburg. This is still work in progress so if you have any recommendations or improvements or want to contribute something please feel free to do so.

* [[Duisburg]]: Here you find some general information about Duisburg, moving here, finding an apartment and some tips to get started. See also the [https://www.wetter.com/hd-live-webcams/deutschland/duisburg-sportschule-wedau/5295e2f857bad/ Duisburg-Webcam]!
* [[German linguistic resources|Cherman ;) linguistic resources]]: Linguistic resources for learning the mother tongue of many German-speaking scientists
* [[University]]: All the forms and papers and websites you need for the administrative part of your work, as well as some useful links to university events.
* [[Software]]: Links to and explanations about the needed systems and software (including connecting remotely). Also includes links to useful astro resources.
* [[Hardware]]: Our computers and the clusters (computing resources) we use.
* [[Advanced Training]]: Links to training opportunities inside and outside the university
* [[Science]]: Research resources, including links to lists of conferences and meetings
* [[PhD]]: An overview of things you have to do when you start your PhD.
* [[Grants]]
* The official [https://www.uni-due.de/physik/agk/ website] of the group with offices, phone numbers, and e-mail addresses.
* The group calendar is organized on the faculty's [https://nxcl.e-services.physik.uni-due.de Next-Cloud].
* [[Papers|Interesting papers]]: Sporadically updated list of papers that could be useful to several (>0) group members
* [[Projects]]: collaborative projects

* [[Arbeitsschutz]]
* [[Imperia]]
* [[Wiki-Hilfe]]

Science

2024-04-16T05:39:03Z

Gabriel: Reihenfolge geändert, neues Material bei Konferenzlisten und Seminarserien

== Conferences and other meetings ==

=== Conferences ===
Lists of conferences or meetings in astrophysics or specifically on planets or of interest to planet researchers. No list seems complete but their union might be:
* https://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/en/meetings/
* https://exoplanet.eu/meetings/future/
* https://exoplanets.nasa.gov/exep/events/

=== Online Seminars ===
* Massive Stars Online Seminar Website: https://massivestars.org/seminars/, https://www.youtube.com/@iaug2commission
* Game Changers Online Seminars (ISSI Bern): https://www.issibern.ch/online-seminars-game-changers/
* Rocky Worlds Discussions: https://discussions.rockyworlds.org/
* Open Astronomy Seminars: http://iactalks.iac.es/
* Origins Seminars Series (Arizona): https://eos-nexus.org/origins-seminar/

== General Resources ==
* [https://ui.adsabs.harvard.edu/classic-form The NASA ADS Bibliography service] for looking for papers. Enter the author name (as "^Last_name" to look for a first-author paper), press four times on the "Tab" key to get to the starting year field, enter the initial and (TAB-TAB) final year of the paper (e.g. 2014 and 2014 if you know that the paper is from that year) and press "Enter" to search. The results will give you citations to that paper (see on the side), which is an excellent way of getting an overview of the literature and discover relevant papers.
* [https://arxiv.org/list/astro-ph.EP/recent arXiv] (pronounced "astro-ph" ;)) presents a daily list of the posted papers but it is better to [https://info.arxiv.org/help/subscribe.html sign up] for the daily e-mail: no chance of forgetting to check the paper and you see the abstract directly. To register to astro-ph.EP (Extrasolar planets, the category relevant to at least some of us): send an e-mail to physics@arxiv.org with "subscribe" on the subject line and "add EP" in the body, nothing else.
* Register for the monthly [https://nccr-planets.ch/exoplanetnews/ ExoplanetNews] newsletter that presents the abstract and usually one plot from all those who sent it a contribution. A good place to catch papers you may have missed from the daily arXiv postings or that were not announced there. And make sure to send to advertise also your paper through EPNews!

== Peer-reviewed journals ==

=== Astronomy ===
* Astronomy & Astrophysics (A&A): https://www.aanda.org/
* Monthly Notices of the Royal Astronomical Society (MNRAS): https://academic.oup.com/mnras
* The Astrophysical Journal (ApJ): https://iopscience.iop.org/journal/0004-637X, https://iopscience.iop.org/journal/2041-8205, https://iopscience.iop.org/journal/0067-0049, and https://iopscience.iop.org/journal/1538-3881
* Astronomische Nachrichten (AN): https://www.aip.de/AN/

=== Peer-Review Journals for Physics in general ===
* Nature (Nat): https://www.nature.com/
* Nature Astronomy (NatAstron): https://www.nature.com/natastron/
* Science (Sci): https://www.science.org/

If you are not sure whether a journal is serious, see if it appears on this website: https://beallslist.net.
If it does, stay away.

== Data Bases ==
''To be done''

University

2024-03-25T15:52:28Z

Gabriel: Neue Information über Veröffentlichungen; umorganisieren (hoffentlich logischer – gerne verbessern!); einen toten Link gefunden und als solchen markiert

== Links and contacts ==

=== Trips and publications ===

* SAP portal (for handing in travel expenses): https://portal.sap.uni-due.de/irj/portal

* Travel expenses A–Z (only in German): https://www.uni-due.de/verwaltung/reisekosten/a_z.php

* Publications with Open Access (whether chosen by the author or set by journal policy; the latter includes A&A, Astrophysical Journal (Letters) [ApJ], Monthly Notices of the Royal Astronomical Society [MNRAS]) can be '''sponsored''' in a large part by the university!
** The billing address should include your name and Universität Duisburg–Essen
** You probably need to ask the publisher to include the [https://www.uni-due.de/de/impressum.shtml University's VAT number (USt-IdNr.)]: DE 811 272 995
** Forward the bill to the Universitätsbibliothek at publikationskosten.ub [AT] uni-due.de and indicate in your e-mail the Kostenstelle or PSP-Element (ask Ingo if you are not sure)

=== Central services ===

* Selfcare (manage passwords, 2FA, '''[[Mail+Spam|mail and spam filter setting]]'''): https://selfcare.uni-due.de/login
* Printing center of the university: https://www.uni-due.de/verwaltung/udz/

=== General ===

* A short video about the campus: https://www.youtube.com/watch?v=QyenX8Jt5-U
* Welcome Service: https://www.uni-due.de/welcome-service/en/index.php

=== Useful contacts ===

* Janitor of MC: [https://www.uni-due.de/zentralverwaltung/kontaktinformationen.php?id=57857 Ralf Roel]
* Facility manager: [https://www.uni-due.de/zentralverwaltung/kontaktinformationen.php?id=51521 Heinrich Röhl]
* Responsible for external further training costs: [https://www.uni-due.de/zentralverwaltung/kontaktinformationen.php?id=47613 Jutta Bonnet]

=== Physics links ===

* Physical colloquium, Wednesdays at 1pm during the semester: https://www.uni-due.de/physik/veranstaltungen/physikalisches_kolloquium_en.php
* Theoretical physics colloquium, Fridays at 2pm during the semester: https://www.uni-due.de/physik/veranstaltungen/theorie-kolloquium.php
* List of international astronomy meetings: https://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/en/meetings/

=== Teaching links ===

* Moodle: https://moodle.uni-due.de/
* Schedule for physics lectures: https://www.lsf.uni-due.de/lsf/rds?state=wtree&search=1&trex=step&root120232=356121%7C355064&P.vx=kurz

=== Career and training ===

* Career services: https://www.uni-due.de/abz/career.php
* German "Survival Guide: Science": https://link.springer.com/book/10.1007/978-3-662-67797-1
* [https://sisonline.uni-due.de/LS/2090317315/INF?linktype=menue Further Training for employees][dead or incorrect link]
* Graduate Center Plus for PhD students: https://www.uni-due.de/gcplus/en/doc_index.php

=== Other ===

* "Pausenexpress", a 15 minutes sports program for research groups around lunch time: https://www.uni-due.de/hochschulsport/pausenexpress
* Gender equality in physics: https://www.uni-due.de/physik/gleichstellung/gleichstellung_en.php

== [https://www.youtube.com/watch?v=wREBD2og5iY Get around, get around, I get around] ==

The university is divided into two campuses, one in Duisburg and one in Essen. For most of the time you should be fine to just stay in Duisburg, but some of the teaching duties are in Essen. You can either take public transport to get there or there is a shuttle bus leaving once an hour. More information can be found under https://www.uni-due.de/verwaltung/pendelbus.php. Please note that the stops currently change due to construction works.

German linguistic resources

2024-01-11T11:51:14Z

Gabriel: Ruhrpottlexikon derf nich fehle

Praktische Links:

* [https://dict.leo.org/ LEO]: very good for understanding German texts. Note also the conjugation and declination tables (see small symbol next to the word)
* [https://www.dwds.de/ DWDS]: best pure-German dictionary
* [https://www.deutschlandfunk.de/ Deutschlandfunk] live: playing it in the background is a great help for learning German
* [https://www.deine-woerter.de/lexikon/ruhrpott/ Ruhrpottlexikon]: learn the local dialect :). ''Da weißte wo der Frosch die Locken hat!''
* [https://www.berndeutsch.ch/ Berndeutsch]: a dictionary of Bernese German

German linguistic resources

2024-01-09T21:56:48Z

Gabriel: leichte Linkkorrektur

Praktische Links:

* [https://dict.leo.org/ LEO]: very good for understanding German texts. Note also the conjugation and declination tables (see small symbol next to the word)
* [https://www.dwds.de/ DWDS]: best pure-German dictionary
* [https://www.deutschlandfunk.de/ Deutschlandfunk] live: playing it in the background is a great help for learning German
* [https://www.berndeutsch.ch/ Berndeutsch]: a dictionary of Bernese German :)

Main Page

2024-01-08T18:45:37Z

Gabriel: Formulierung

Herzlich willkommen zum Wiki der AG Kuiper! Welcome to the Wiki of AG Kuiper!

Here you find some general information and helpful links for your start in Duisburg. This is still work in progress so if you have any recommendations or improvements or want to contribute something please feel free to do so.

* [[Duisburg]]: Here you find some general information about Duisburg, moving here, finding an apartment and some tips to get started. See also the [https://www.wetter.com/hd-live-webcams/deutschland/duisburg-sportschule-wedau/5295e2f857bad/ Duisburg-Webcam]!
* [[German linguistic resources|Cherman ;) linguistic resources]]: Linguistic resources for learning the mother tongue of many German-speaking scientists
* [[University]]: All the forms and papers and websites you need for the administrative part of your work, as well as some useful links to university events.
* [[Software]]: Links to and explanations about the needed systems and software (including connecting remotely). Also includes links to useful astro resources.
* [[Hardware]]: Our computers and the clusters (computing resources) we use.
* [[Science]]: A list of resources you can use for your research, as well as an overview of peer-reviewed journals.
* [[PhD]]: A list of things you have to do when you start your PhD.
* [[Grants]]
* The official [https://www.uni-due.de/physik/agk/ website] of the group with offices, phone numbers, and e-mail addresses.
* [[Papers|Interesting papers]]: Sporadically updated list of papers that could be useful to several (>0) group members

* [[Arbeitsschutz]]
* [[Imperia]]
* [[Wiki-Hilfe]]

Arbeitsgruppe Kuiper:About

2024-01-08T18:44:44Z

Gabriel: Ein Beginn

Wir sind (per definitionem) die Arbeitsgruppe um Prof. Dr. Rolf Kuiper. Mehr über die Gruppe (inkl. Kontaktdaten): [https://www.uni-due.de/physik/agk/ Offizielle Webseite der Gruppe].

German linguistic resources

2024-01-08T11:49:24Z

Gabriel: Mehr

Praktische Links:

* [https://dict.leo.org/ LEO]: very good for understanding German texts. Note also the conjugation and declination tables (see small symbol next to the word)
* [https://www.dwds.de/wb/ DWDS]: best pure-German dictionary
* [https://www.deutschlandfunk.de/ Deutschlandfunk] live: playing it in the background is a great help for learning German
* [https://www.berndeutsch.ch/ Berndeutsch]: a dictionary of Bernese German :)

Papers

2024-01-08T11:44:00Z

Gabriel: Werbung für vogelbezogene Artikel

German linguistic resources

2024-01-08T10:58:25Z

Gabriel: Sehr schneller Beginn

Praktische Links:

* [https://dict.leo.org/ LEO]
* [https://www.dwds.de/wb/ DWDS]
* [https://www.deutschlandradio.de/ Deutschland Radio] -- listen in the background

Main Page

2024-01-08T10:56:38Z

Gabriel: +Deutsch

Herzlich willkommen zum Wiki der AG Kuiper! Welcome to the Wiki of AG Kuiper!

Here you find some general information and helpful links for your start in Duisburg. This is still work in progress so if you have any recommendations or improvements or want to contribute something please feel free to do so.

* [[Duisburg]]: Here you find some general information about Duisburg, moving here, finding an apartment and some tips to get started. See also the [https://www.wetter.com/hd-live-webcams/deutschland/duisburg-sportschule-wedau/5295e2f857bad/ Duisburg-Webcam]!
* [[German linguistic resources|Cherman ;) linguistic resources]]: Linguistic resources for learning the mother tongue of so many German scientists :)
* [[University]]: All the forms and papers and websites you need for the administrative part of your work, as well as some useful links to university events.
* [[Software]]: Links to and explanations about the needed systems and software (including connecting remotely). Also includes links to useful astro resources.
* [[Hardware]]: Our computers and the clusters (computing resources) we use.
* [[Science]]: A list of resources you can use for your research, as well as an overview of peer-reviewed journals.
* [[PhD]]: A list of things you have to do when you start your PhD.
* [[Grants]]
* The official [https://www.uni-due.de/physik/agk/ website] of the group with offices, phone numbers, and e-mail addresses.
* [[Papers|Interesting papers]]: Sporadically updated list of papers that could be useful to several (>0) group members

* [[Arbeitsschutz]]
* [[Imperia]]
* [[Wiki-Hilfe]]

Papers

2024-01-08T08:47:08Z

Gabriel: Grüße von Woody Woodpecker :)

Papers

2024-01-06T19:48:12Z

Gabriel: vereinfachte Anleitungen

Papers

2024-01-06T19:46:31Z

Gabriel: Schöner Chemieartikel! Auffrischung vom bahnbrechenden Artikel von Cleeves et al. (2015)

Main Page

2023-12-30T11:37:23Z

Gabriel: Webkam hinzugefügt

Herzlich willkommen zum Wiki der AG Kuiper! Welcome to the Wiki of AG Kuiper!

Here you find some general information and helpful links for your start in Duisburg. This is still work in progress so if you have any recommendations or improvements or want to contribute something please feel free to do so.

* [[Duisburg]]: Here you find some general information about Duisburg, moving here, finding an apartment and some tips to get started. See also the [https://www.wetter.com/hd-live-webcams/deutschland/duisburg-sportschule-wedau/5295e2f857bad/ Duisburg-Webcam]!
* [[University]]: All the forms and papers and websites you need for the administrative part of your work, as well as some useful links to university events.
* [[Software]]: Links to and explanations about the needed systems and software (including connecting remotely). Also includes links to useful astro resources.
* [[Hardware]]: Our computers and the clusters (computing resources) we use.
* [[Science]]: A list of resources you can use for your research, as well as an overview of peer-reviewed journals.
* [[PhD]]: A list of things you have to do when you start your PhD.
* [[Grants]]
* The official [https://www.uni-due.de/physik/agk/ website] of the group with offices, phone numbers, and e-mail addresses.
* [[Papers|Interesting papers]]: Sporadically updated list of papers that could be useful to several (>0) group members

* [[Arbeitsschutz]]
* [[Imperia]]
* [[Wiki-Hilfe]]

SSH and SCP

2023-12-30T11:25:41Z

Gabriel: Style

We need the SSH and SCP commands to access the different clusters of the group. As soon as your user ID is working, Lothar can give you access to the two [[servers]] Asterope and Merope.

== SSH ==

=== Inside the university ===

To connect to Asterope or Merope simply use, where <code><username></code> has the format <code>xyz123a</code>, the command:

<code>ssh <username>@asterope.agk.uni-due.de</code>

=== From outside of the university ===

To access the university network from outside, we need to establish a [[VPN]] connection using Forcepoint.
The command needed to connect is:

<code>sudo forcepoint-client vpn.uni-due.de --resolver /usr/bin/resolvectl</code>

Since the university does not allow direct forwarding to the group servers we need to take a detour over the staff server. This is done by the following command:

<code>ssh -4 <username>@staff.uni-due.de</code>

Then, to connect to Asterope:

<code>ssh -p 54321 localhost</code>

The <code>-4</code> specifies to use IPv4 and <code>-p</code> specifies the port for the connection. From Asterope, you can do simply <code>ssh merope</code> to reach Merope (as the same user).

To get a direct pipeline to Asterope you can use

<code>ssh -p 54321 -J <username>@staff.uni-due.de <username>@localhost</code>

If you want graphics windows, use the <code>-X</code> flag with the <code>ssh</code> call(s).

== SCP ==

SCP from inside the university network is very straightforward. The needed command is

<code>scp -pr <username>@asterope.agk.uni-due.de:asterope-home/some/folder/somewhere/somedata.data</code>

To transfer data from Asterope to your local machine while using the VPN, I use a two-step system where I first transfer the data into a clipboard folder on the staff server and afterwards onto my local machine. The needed commands for this version are:

<code>scp -pr -P 54321 <username>@localhost:/homes/<username>/asterope-home/some/folder/somewhere/somedata.data clipboard/</code>

<code>scp -pr -4 <username>@staff.uni-due.de:clipboard/somedata.data /home/some/path/to/somewhere/</code>

The <code>-r</code> is needed to copy folders and not just single files, the <code>-P</code> to specify a port to which to connect to. Note that for <code>scp</code>, in contrast to <code>ssh</code>, this <code>p</code> is uppercase. The direct forwarding from above works here as well, just replace the <code>-p</code> flag by <code>-P</code>.

It is good practice to use the (lowercase) <code>-p</code> flag (note how flags ''can'' be written together: <code>-pr4</code> or <code>-p -r -4</code> would also work) to preserve the timestamp on the file(s); otherwise, the timestamp is set to the time of copy, which is "not true" and possibly confusing (the file was not modified, just transfered).

A more powerful command that is resilient to network interruptions, has optimisations that are important especially for large files, etc. is <code>rsync</code>.

Hardware

2023-12-30T11:24:37Z

Gabriel: Link to SSH_and_SCP

== Computers, laptops, displays and so on ==
Lothar is responsible for organising and maintaining all the hardware that you need for your day to day work. If you need anything specific (even if it's just a certain cable) feel free to ask him. He is also responsible for everything network related and can help you to access Asterope or Merope for the first time.

== Asterope and Merope ==

The group owns two clusters called Asterope and Merope. See [[SSH_and_SCP|the SSH and SCP page]] for access details. Both have two AMD EPYC 7763 processors with 64 cores each, 128GB of RAM and 17TB of local storage. Both run a Slurm Workload manager to schedule the jobs.

Here you can find a cheat sheet with some useful Slurm commands: https://ircc.fiu.edu/download/user-guides/Slurm_Cheat_Sheet.pdf

== magnitUDE and amplitUDE ==

=== magnitUDE ===
magnitUDE is a high-performance cluster operated by the university. Information on how to use it can be found here: https://www.uni-due.de/css/how_to_s

Performance data:

* Supplier: NEC Deutschland GmbH
* 624 Compute Nodes /14,976 Cores (since Jan. 2017)
* Intel E5-2650_v4 Broadwell CPUs
* Intel OmniPath Interconnect
* 56,064 GB Main Memory (since Jan. 2017)
* 480 TB NEC LXFS Storage
* High-Performance Linpack Benchmark (using 624 C-Nodes + 1 Login Node) - Rmax 489.3 TFlop/s - Rpeak 528.0 TFlop/s

=== amplitUDE ===
amplitUDE will start working at some point in the second half of 2023. For up to date information please check out https://www.uni-due.de/css/amplitude_main.php

Performance data (no guarantee):

* 240 CPU-nodes with 2x Intel® Xeon® Platinum 8480+ processor each, of which
** 176 "Standard" (512 GB RAM)
** 51 "High-Mem" (1 TB RAM)
** 13 "Super High-Mem"(2 TB RAM)
* 19 GPU-nodes with 2x Intel® Xeon® Platinum 8480+ processor each, of which
** 15 with 4x NVIDIA H100
** 4 with 2x NVIDIA H100
* Mellanox InfiniBand NDR200 with Blocking 1:1,66
* Lustre File-System with approx. 2,1 PB useable capacity

== Training in High Performance Computing ==

* High-Performance Computing Center Stuttgart: https://www.hlrs.de/training/hpc-training
* Jülich Supercomputing Centre: https://www.fz-juelich.de/en/ias/jsc/education/training-courses

SSH and SCP

2023-12-30T10:59:48Z

Gabriel: Clarity

We need the SSH and SCP commands to access the different clusters of the group. As soon as your user ID is working, Lothar can give you access to the two [[servers]] Asterope and Merope.

== SSH ==

=== Inside the university ===

To connect to Asterope or Merope simply use, where <code><USERNAME></code> has the format <code>xyz123a</code>, the command:

<code>ssh <USERNAME>@asterope.agk.uni-due.de</code>

=== From outside of the university ===

To access the university network from outside, we need to establish a [[VPN]] connection using Forcepoint.
The command needed to connect is:

<code>sudo forcepoint-client vpn.uni-due.de --resolver /usr/bin/resolvectl</code>

Since the university does not allow direct forwarding to the group servers we need to take a detour over the staff server. This is done by the following command:

<code>ssh -4 <username>@staff.uni-due.de</code>

Then, to connect to Asterope:

<code>ssh -p 54321 localhost</code>

The <code>-4</code> specifies to use IPv4 and <code>-p</code> specifies the port for the connection. From Asterope, you can do simply <code>ssh merope</code> to reach Merope (as the same user).

To get a direct pipeline to Asterope you can use

<code>ssh -p 54321 -J <username>@staff.uni-due.de <username>@localhost</code>

If you want graphics windows, use the <code>-X</code> flag with the <code>ssh</code> call(s).

== SCP ==

SCP from inside the university network is very straightforward. The needed command is

<code>scp -pr <username>@asterope.agk.uni-due.de:asterope-home/some/folder/somewhere/somedata.data</code>

To transfer data from Asterope to your local machine while using the VPN, I use a two-step system where I first transfer the data into a clipboard folder on the staff server and afterwards onto my local machine. The needed commands for this version are:

<code>scp -pr -P 54321 <username>@localhost:/homes/<username>/asterope-home/some/folder/somewhere/somedata.data clipboard/</code>

<code>scp -pr -4 <username>@staff.uni-due.de:clipboard/somedata.data /home/some/path/to/somewhere/</code>

The <code>-r</code> is needed to copy folders and not just single files, the <code>-P</code> to specify a port to which to connect to. Note that for <code>scp</code>, in contrast to <code>ssh</code>, this <code>p</code> is uppercase. The direct forwarding from above works here as well, just replace the <code>-p</code> flag by <code>-P</code>.

It is good practice to use the (lowercase) <code>-p</code> flag (note how flags ''can'' be written together: <code>-pr4</code> or <code>-p -r -4</code> would also work) to preserve the timestamp on the file(s); otherwise, the timestamp is set to the time of copy, which is "not true" and possibly confusing (the file was not modified, just transfered).

A more powerful command that is resilient to network interruptions, has optimisations that are important especially for large files, etc. is <code>rsync</code>.

SSH and SCP

2023-12-30T10:58:22Z

Gabriel: Extra line deleted

We need the SSH and SCP commands to access the different clusters of the group. As soon as your user ID is working, Lothar can give you access to the two [[servers]] Asterope and Merope.

== SSH ==

=== Inside the university ===

To connect to Asterope or Merope simply use, where <code><USERNAME></code> has the format <code>xyz123a</code>, the command:

<code>ssh <USERNAME>@asterope.agk.uni-due.de</code>

=== From outside of the university ===

To access the university network from outside, we need to establish a [[VPN]] connection using Forcepoint.
The command needed to connect is:

<code>sudo forcepoint-client vpn.uni-due.de --resolver /usr/bin/resolvectl</code>

Since the university does not allow direct forwarding to the group servers we need to take a detour over the staff server. This is done by the following command:

<code>ssh -4 <username>@staff.uni-due.de</code>

The <code>-4</code> specifies to use IPv4 for the connection. Then, to connect to Asterope:

<code>ssh -p 54321 localhost</code>

The <code>-p</code> tells <code>ssh</code> specifies the port for the connection. From there, you can do simply <code>ssh merope</code> to reach Merope (as the same user).

To get a direct pipeline to Asterope you can use

<code>ssh -p 54321 -J <username>@staff.uni-due.de <username>@localhost</code>

If you want graphics windows, use the <code>-X</code> flag with the <code>ssh</code> call(s).

== SCP ==

SCP from inside the university network is very straightforward. The needed command is

<code>scp -pr <username>@asterope.agk.uni-due.de:asterope-home/some/folder/somewhere/somedata.data</code>

To transfer data from Asterope to your local machine while using the VPN, I use a two-step system where I first transfer the data into a clipboard folder on the staff server and afterwards onto my local machine. The needed commands for this version are:

<code>scp -pr -P 54321 <username>@localhost:/homes/<username>/asterope-home/some/folder/somewhere/somedata.data clipboard/</code>

<code>scp -pr -4 <username>@staff.uni-due.de:clipboard/somedata.data /home/some/path/to/somewhere/</code>

The <code>-r</code> is needed to copy folders and not just single files, the <code>-P</code> to specify a port to which to connect to. Note that for <code>scp</code>, in contrast to <code>ssh</code>, this <code>p</code> is uppercase. The direct forwarding from above works here as well, just replace the <code>-p</code> flag by <code>-P</code>.

It is good practice to use the (lowercase) <code>-p</code> flag (note how flags ''can'' be written together: <code>-pr4</code> or <code>-p -r -4</code> would also work) to preserve the timestamp on the file(s); otherwise, the timestamp is set to the time of copy, which is "not true" and possibly confusing (the file was not modified, just transfered).

A more powerful command that is resilient to network interruptions, has optimisations that are important especially for large files, etc. is <code>rsync</code>.

SSH and SCP

2023-12-30T10:57:52Z

Gabriel: Formatting, clarity

We need the SSH and SCP commands to access the different clusters of the group. As soon as your user ID is working, Lothar can give you access to the two [[servers]] Asterope and Merope.

== SSH ==

=== Inside the university ===

To connect to Asterope or Merope simply use, where <code><USERNAME></code> has the format <code>xyz123a</code>, the command:

<code>ssh <USERNAME>@asterope.agk.uni-due.de</code>

=== From outside of the university ===

To access the university network from outside, we need to establish a [[VPN]] connection using Forcepoint.
The command needed to connect is:

<code>sudo forcepoint-client vpn.uni-due.de --resolver /usr/bin/resolvectl</code>

Since the university does not allow direct forwarding to the group servers we need to take a detour over the staff server. This is done by the following command:

<code>ssh -4 <username>@staff.uni-due.de</code>

The <code>-4</code> specifies to use IPv4 for the connection. Then, to connect to Asterope:

<code>ssh -p 54321 localhost</code>

The <code>-p</code> tells <code>ssh</code> specifies the port for the connection. From there, you can do simply <code>ssh merope</code> to reach Merope (as the same user).

To get a direct pipeline to Asterope you can use

<code>ssh -p 54321 -J <username>@staff.uni-due.de <username>@localhost</code>

If you want graphics windows, use the <code>-X</code> flag with the <code>ssh</code> call(s).

== SCP ==

SCP from inside the university network is very straightforward. The needed command is

<code>scp -pr <username>@asterope.agk.uni-due.de:asterope-home/some/folder/somewhere/somedata.data</code>

To transfer data from Asterope to your local machine while using the VPN, I use a two-step system where I first transfer the data into a clipboard folder on the staff server and afterwards onto my local machine. The needed commands for this version are:

<code>scp -pr -P 54321 <username>@localhost:/homes/<username>/asterope-home/some/folder/somewhere/somedata.data clipboard/</code>

<code>scp -pr -4 <username>@staff.uni-due.de:clipboard/somedata.data /home/some/path/to/somewhere/</code>

The <code>-r</code> is needed to copy folders and not just single files, the <code>-P</code> to specify a port to which to connect to. Note that for <code>scp</code>, in contrast to <code>ssh</code>, this <code>p</code> is uppercase. The direct forwarding from above works here as well, just replace the <code>-p</code> flag by <code>-P</code>.

It is good practice to use the (lowercase) <code>-p</code> flag (note how flags ''can'' be written together: <code>-pr4</code> or <code>-p -r -4</code> would also work) to preserve the timestamp on the file(s); otherwise, the timestamp is set to the time of copy, which is "not true" and possibly confusing (the file was not modified, just transfered).

A more powerful command that is resilient to network interruptions, has optimisations that are important especially for large files, etc. is <code>rsync</code>.

VPN

2023-12-30T10:48:16Z

Gabriel: Added comment

= VPN =

== Installation ==

To use the VPN you need to have your [[2-factor authentification]] enabled.

The university uses the forcepoint client. It works for Windows, Mac and Linux systems, so you should be able to install it without much problems.

For German speakers I recommend to just check out this link https://www.uni-due.de/zim/services/internetzugang/vpn.php and follow the explanations there. Unfortunately the english version of this website is not up to date and uses openconnect which does not work anymore.

=== Linux ===

To download forcepoint follow this link https://www.uni-due.de/imperia/md/content/zim/services/internetzugang/vpn_download/forcepointvpnclientlinux252.zip and enter your university credentials. Unzip the downloaded archive and execute one of the files depending on your operating system:

* forcepoint-client-2.5.2.el8.x86_64.rpm for CentOS 8 or RedHat 8
* forcepoint-client_2.5.2+bullseye_amd64.deb for Debian 11 or Ubuntu 20.04
* forcepoint-client_2.5.2+buster_amd64.deb for Debian 10 or Ubuntu 18.04
* forcepoint-client_2.5.2+jammy_amd64.deb for Ubuntu 22.04

=== MacOS ===

Download the client with this link and your university credentials: https://www.uni-due.de/imperia/md/content/zim/services/internetzugang/vpn_download/vpnclient-2.0.6.200429.dmg
Confirm the opening of the app and accept the license agreement. Now you can add a new connection at the bottom left of the client. Fill in the following information:

* Host: vpn.uni-due.de
* Port: 443
* Press confirm
* Subject Name: C=DE, ST=Nordrhein-Westfalen, O=Universit\C3\A4t Duisburg-Essen, CN=vpn.uni-due.de
* SHA-1 Fingerprint: 29:9D:F0:0A:01:28:4E:9F:97:F6:2E:05:E9:A8:FB:D9:EA:4C:2F:98
* SHA256 Fingerprint: 8A:D1:8F:6E:1F:BE:34:9D:2E:4D:03:48:F2:B2:29:2A:64:D5:DD:04:EA:86:26:F3:9E:ED:AC:9F:C6:9B:6A:22
* Press confirm again
* Enter your user credentials

Now you are connected to the VPN.

=== Windows ===

To be done
== Usage ==

The command needed to connect is (the <code>--resolver</code> part can even often be omitted):

<code>sudo forcepoint-client vpn.uni-due.de --resolver /usr/bin/resolvectl<code>

Software

2023-12-30T10:45:37Z

Gabriel: Formatting, typo

== Overview ==
* [https://git.uni-due.de/agkuiper/belt Belt]: Rolf's PLUTO version; more information is on GitLab
* [[Software#Two-Factor Authentification|Two-Factor Authentification (2FA)]]
* [[VPN]]
* [[SSH and SCP]]
* [https://git.uni-due.de/ University Gitlab]
* [https://uni-due.zoom.us/profile University Zoom]
* [https://nxcl.e-services.physik.uni-due.de University Nextcloud]: This is where we have the group calendar as well!
* [https://www.uni-due.de/zim/services/software/office-ma.php MS Office]. Note that [https://www.libreoffice.org/ LibreOffice] (Windows, Linux; use package manager) is an excellent and free alternative but ''caveat emptor'' about some formatting compatibilities.
* [[Zotero]]

== Two-Factor Authentification ==
The two-factor authentification (2FA) is needed for most university services as VPN or Nextcloud.

After activating your user-ID you need to activate it in the selfcare portal (https://selfcare.uni-due.de/). The website will walk you through the installation. You'll need to have e.g. an app for the generation of the second factor. I recommend using the app OpenOTP. Please make sure that you scan the shown QR-codes, they are very hard to regain.

However, it is also possible to do it without a phone or application. For this, you only need to install forcepoint and oathtool. Then, you call:
~$ sudo forcepoint-client vpn.uni-due.de
Enter your normal/central university username and password. Then, if warnings come, say yes, and it will ask you for the second factor. Copy the timestamp for the line <code>*** Please enter reply for challenge ***</code> and run—in the same terminal after having paused forcepoint (Ctrl+Z, then "bg", then <Enter>) or in a separate terminal—the following command:
~$ oathtool --totp -b <YOUR "SECRET"> --now="<TIMESTAMP GIVEN BY FORCEPOINT>"
It will return a six-digit number that you then give to forcepoint (<code>fg</code> to bring it back to the foreground, or switching to the tab). You have all the time in the world because you are giving the timestamp explicitly :). You get the "secret" from the selfcare portal when you generate a token (the QR code is just an URL and there is a "…?secret=…&" part to it; the string between "=" and "&" is the "secret").

In general, to parse a QR code: you can use <code>zbarimg</code>, e.g. from a quick screenshot:
~$ zbarimg "/home/georgeslemaistre/Bilder/Bildschirmfoto von 2023-10-05 15-00-00.png"
otpauth://totp/TOTP1938HK33?secret=33IHS343AMDGPH123456CO777JPIIJMJV&period=30&digits=6&issuer=uni-duisburg-essen&image=https%3A//selfcare.uni-due.de/_Resources/Static/Packages/UDE.Portal/images/logo/logo--otp.png
(No worries, this is a fake "secret" :).)

'''Important''': make sure to execute the oathtool command prefixed with a space on the command line so that it not get saved to your command history file because your "secret" is in plain text there. You can call the command once without writing the "secret" (which of course will not work) just to have the command in the history (searching in the history on the command line: <code>Ctrl</code>+<code>R</code>). Typically, you need to close the terminal (exit) for the history actually to be written to the history file (~/.bash_history if you are using bash.) Saving the secret itself in plain text is not the best idea, obviously, so you need to find a solution for that part…

If you forgot to use a space at the beginning of the line and the terminal is still open, go up in command history with the up arrow until you get to that command, delete the command on the line and '''do not press enter''' but first go back "down to the present" with the down arrow and '''then''' press enter. You can check that it has worked by going back up (with the up arrow) and you will see a blank line where the command was. Then you can exit. If you have already closed the terminal, open the history file in an editor and delete the line but make sure that no back-up copy of the history file (containing the command...) is made, or delete it manually afterwards.

Software

2023-12-30T10:41:02Z

Gabriel: /* Two-Factor Authentification */ Typo corrected

== Overview ==
* [https://git.uni-due.de/agkuiper/belt Belt]: Rolf's PLUTO version; more information is on GitLab
* [[Software#Two-Factor Authentification|Two-Factor Authentification (2FA)]]
* [[VPN]]
* [[SSH and SCP]]
* [https://git.uni-due.de/ University Gitlab]
* [https://uni-due.zoom.us/profile University Zoom]
* [https://nxcl.e-services.physik.uni-due.de University Nextcloud]: This is where we have the group calendar as well!
* [https://www.uni-due.de/zim/services/software/office-ma.php MS Office]. Note that [https://www.libreoffice.org/ LibreOffice] (Windows, Linux; use package manager) is an excellent and free alternative but ''caveat emptor'' about some formatting compatibilities.
* [[Zotero]]

== Two-Factor Authentification ==
The two-factor authentification (2FA) is needed for most university services as VPN or Nextcloud.

After activating your user-ID you need to activate it in the selfcare portal (https://selfcare.uni-due.de/). The website will walk you through the installation. You'll need to have e.g. an app for the generation of the second factor. I recommend using the app OpenOTP. Please make sure that you scan the shown QR-codes, they are very hard to regain.

It is possible to do it without a phone or application. For this, you only need to install forcepoint and oathtool. Then, you call:
~$ sudo forcepoint-client vpn.uni-due.de
Enter your normal university username and password. Then, if warnings come, you say yes, and it will ask you for the second factor. Copy the last timestamp you see and run—in the same terminal after having paused forcepoint (Ctrl+Z, then "bg", then <Enter>) or in a separate terminal—the following command:
~$ oathtool --totp -b <YOUR "SECRET"> --now="<TIMESTAMP GIVEN BY FORCEPOINT>"
It will return a six-digit number that you then give to forcepoint ("fg" to bring it back to the foreground, or switching to the tab). You have all the time in the world because you are giving the timestamp explicitly :). You get the "secret" from the selfcare portal when you generate a token (the QR code is just an URL and there is a "…?secret=…&" part to it; the string between "=" and "&" is the "secret").

In general, to parse a QR code: you can use zbarimg, e.g. from a quick screenshot:
~$ zbarimg "/home/georgeslemaistre/Bilder/Bildschirmfoto von 2023-10-05 15-00-00.png"
otpauth://totp/TOTP1938HK33?secret=33IHS343AMDGPH123456CO777JPIIJMJV&period=30&digits=6&issuer=uni-duisburg-essen&image=https%3A//selfcare.uni-due.de/_Resources/Static/Packages/UDE.Portal/images/logo/logo--otp.png
(No worries, this is a fake "secret" :).)

'''Important''': make sure to execute the oathtool command prefixed with a space on the command line so that it not get saved to your command history file because your "secret" is in plain text there. You can call the command once without writing the "secret" (which of course will not work) just to have the command in the history (searching in the history on the command line: Ctrl+R). Typically, you need to close the terminal (exit) for the history actually to be written to the history file (~/.bash_history if you are using bash.) Saving the secret itself in plain text is not the best idea, obviously, so you need to find a solution for that part…

If you forgot to use a space at the beginning of the line and the terminal is still open, go up in command history with the up arrow until you get to that command, delete the command on the line and '''do not press enter''' but first go back "down to the present" with the down arrow and '''then''' press enter. You can check that it has worked by going back up (with the up arrow) and you will see a blank line where the command was. Then you can exit. If you have already closed the terminal, open the history file in an editor and delete the line but make sure that no back-up copy of the history file (containing the command...) is made, or delete it manually afterwards.

SSH and SCP

2023-12-30T10:35:13Z

Gabriel: Info on -p flag added

We need the SSH and SCP commands to access the different clusters of the group. As soon as your user ID is working, Lothar can give you access to the two [[servers]] Asterope and Merope.

== SSH ==

=== Inside the university ===

To connect to Asterope or Merope simply use the command

<code>ssh cbi586j@asterope.agk.uni-due.de</code>

=== From outside of the university ===

To access the university network from outside, we need to establish a [[VPN]] connection using Forcepoint.
The command needed to connect is:

<code>sudo forcepoint-client vpn.uni-due.de --resolver /usr/bin/resolvectl</code>

Since the university does not allow direct forwarding to the group servers we need to take a detour over the staff server. This is done by the following command:

<code>ssh -4 <username>@staff.uni-due.de</code>

followed by

<code>ssh -p 54321 localhost</code>

to connect to Asterope.

The <code>-4</code> specifies to use IPv4 for the connection and the <code>-p</code> tells ssh to use a specific port for the connection.

To get a direct pipeline you can use

<code>ssh -p 54321 -J <username>@staff.uni-due.de <username>@localhost</code>

== SCP ==

SCP from inside the university network is very straightforward. The needed command is

<code>scp -pr <username>@asterope.agk.uni-due.de:asterope-home/some/folder/somewhere/somedata.data</code>

To transfer data from Asterope to your local machine while using the VPN, I use a two-step system where I first transfer the data into a clipboard folder on the staff server and afterwards onto my local machine. The needed commands for this version are:

<code>scp -pr -P 54321 <username>@localhost:/homes/<username>/asterope-home/some/folder/somewhere/somedata.data clipboard/</code>

<code>scp -pr -4 <username>@staff.uni-due.de:clipboard/somedata.data /home/some/path/to/somewhere/</code>

The <code>-r</code> is needed to copy folders and not just single files, the <code>-P</code> to specify a port to which to connect to. Note that for <code>scp</code>, in contrast to <code>ssh</code>, this <code>p</code> is uppercase. The direct forwarding from above works here as well, just replace the <code>-p</code> flag by <code>-P</code>.

It is good practice to use the (lowercase) <code>-p</code> flag (note how flags ''can'' be written together: <code>-pr4</code> or <code>-p -r -4</code> would also work) to preserve the timestamp on the file(s); otherwise, the timestamp is set to the time of copy, which is "not true" and possibly confusing (the file was not modified, just transfered).

A more powerful command that is resilient to network interruptions, has optimisations that are important especially for large files, etc. is <code>rsync</code>.

Papers

2023-12-15T10:35:33Z

Gabriel: Bei HD 136164 Ab geht es eher um einen Stern/Planeten als um eine Scheibe

Papers

2023-12-15T10:33:30Z

Gabriel: Uniformity of list items

Talk:Papers

2023-12-15T10:31:27Z

Gabriel: Minikosmetikverbesserungen

Here on the [https://en.wikipedia.org/wiki/Help:Talk_pages Talk-Page], you can put comments regarding the papers, which can (or should :-)) lead to discussions. Hence, it is advisable to ''sign'' your contributions. This is simply done by appending <code><nowiki>~~~~</nowiki></code>, which will be transformed into your name and the date. For structuring ''threads'', you can indent by means of colons. [[User:Lothar.brendel|Lothar]] ([[User talk:Lothar.brendel|talk]]) 15:12, 13 December 2023 (CET)

Papers

2023-12-12T18:11:43Z

Gabriel: Leicht aufgeräumt

Papers

2023-12-11T18:13:38Z

Gabriel: Klarer geschrieben

Interesting papers can be put here. It would be useful to:
* Put the title and maybe author names
* Put a link to the abstract page, not to the PDF, to allow preview before downloading (very useful with slow connexions, and also for easy access to the ADS page with the published version when coming back to this later)
* Maybe sort by subject (e.g.: Stars, Discs, Planets, Dust/rocks/pebbles, Other) instead of day, since the latter quickly becomes irrelevant
* Within a subject, maybe sort by descending chronological order, to have the newest on top

I implemented this boldly---please review/improve this (maybe drop the division by topic since there will be ambiguous cases? or indicate the month?), '''delete this line''', and delete the dates commented out in the Wiki source if they are not needed anymore. Danke!

== Stars ==

* Young, [https://arxiv.org/abs/2312.03039 "Insights into the first and second hydrostatic core stages from numerical simulations"]

* López-Vázquez et al., [https://arxiv.org/abs/2312.03272 "Multiple shells driven by disk winds: ALMA observations in the HH 30 outflow"]

== Discs ==

* Nixon et al., [https://arxiv.org/abs/2312.04400 "On the role of numerical diffusivity in MHD simulations of global accretion disc dynamos"]

* Stapper et al., [https://arxiv.org/abs/2312.03835 "Constraining the gas mass of Herbig disks using CO isotopologues"]


* Paneque-Carreño et al., [https://arxiv.org/abs/2312.04618 "High turbulence in the IM Lup protoplanetary disk: Direct observational constraints from CN and C_2H emission"]


* Chen et al., [https://arxiv.org/abs/2310.13690 "Planet Gap-opening Feedback on Disk Thermal Structure and Composition"]


* Cattolico & Perets, [https://arxiv.org/abs/2310.11583 "Dynamical evolution of second-generation circumstellar/protoplanetary disks in evolved wide binary systems"]

== Planets ==

* Portegies Zwart & Hochart, [https://arxiv.org/abs/2312.04645 "The origin and evolution of wide Jupiter Mass Binary Objects in young stellar clusters"]

== Small things ==

* Houge et al., [https://arxiv.org/abs/2312.01856 "Surviving the Heat: multi-wavelength analysis of V883 Ori reveals that dust aggregates survive the sublimation of their ice mantles"]

== Other ==
* Dib & Menou, [https://arxiv.org/abs/2312.02091 "Physics simulation capabilities of LLMs"]

Papers

2023-12-11T17:55:09Z

Gabriel: Änderungen an der Struktur!

Interesting papers can be put here. It would be useful to:
* Put the title and maybe author names
* Put a link to the abstract page, not to the PDF, to allow preview before downloading (very useful with slow connexions, and also for easy access to the ADS page with the published version when coming back to this later)
* Maybe sort by subject (e.g.: Stars, Discs, Planets, Dust/rocks/pebbles, Other) instead of day, since the latter quickly becomes irrelevant
* Within a subject, maybe sort by descending chronological order, to have the newest on top

I implemented this boldly---feel free to review/improve this, '''delete this line''', and delete the "date comments" in the source. Danke!

== Stars ==

* Young, [https://arxiv.org/abs/2312.03039 "Insights into the first and second hydrostatic core stages from numerical simulations"]

* López-Vázquez et al., [https://arxiv.org/abs/2312.03272 "Multiple shells driven by disk winds: ALMA observations in the HH 30 outflow"]

== Discs ==

* Nixon et al., [https://arxiv.org/abs/2312.04400 "On the role of numerical diffusivity in MHD simulations of global accretion disc dynamos"]

* Stapper et al., [https://arxiv.org/abs/2312.03835 "Constraining the gas mass of Herbig disks using CO isotopologues"]


* Paneque-Carreño et al., [https://arxiv.org/abs/2312.04618 "High turbulence in the IM Lup protoplanetary disk: Direct observational constraints from CN and C_2H emission"]


* Chen et al., [https://arxiv.org/abs/2310.13690 "Planet Gap-opening Feedback on Disk Thermal Structure and Composition"]


* Cattolico & Perets, [https://arxiv.org/abs/2310.11583 "Dynamical evolution of second-generation circumstellar/protoplanetary disks in evolved wide binary systems"]

== Planets ==

* Portegies Zwart & Hochart, [https://arxiv.org/abs/2312.04645 "The origin and evolution of wide Jupiter Mass Binary Objects in young stellar clusters"]

== Small things ==

* Houge et al., [https://arxiv.org/abs/2312.01856 "Surviving the Heat: multi-wavelength analysis of V883 Ori reveals that dust aggregates survive the sublimation of their ice mantles"]

== Other ==
* Dib & Menou, [https://arxiv.org/abs/2312.02091 "Physics simulation capabilities of LLMs"]