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The AGORA High-resolution Galaxy Simulations Comparison Project. VI. Similarities and Differences in the Circumgalactic Medium

Strawn, Clayton (author)
University of California, Santa Cruz
Roca-Fàbrega, Santi (author)
Lund University,Lunds universitet,Astrofysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Astrophysics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Complutense University of Madrid
Primack, Joel R. (author)
University of California, Santa Cruz
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Kim, Ji Hoon (author)
Seoul National University
Genina, Anna (author)
Max Planck Institute for Astrophysic
Hausammann, Loic (author)
Swiss Federal Institute of Technology,ETH Zürich
Kim, Hyeonyong (author)
Seoul National University
Lupi, Alessandro (author)
University of Milano-Bicocca,University of Insubria
Nagamine, Kentaro (author)
University of Nevada, Las Vegas,Osaka University,University of Tokyo
Powell, Johnny W. (author)
Reed College
Revaz, Yves (author)
Swiss Federal Institute of Technology
Shimizu, Ikkoh (author)
Velázquez, Héctor (author)
National Autonomous University of Mexico
Abel, Tom (author)
Stanford University,Stanford Linear Accelerator Center (SLAC)
Ceverino, Daniel (author)
Autonomous University of Madrid
Dong, Bili (author)
University of California, San Diego
Jung, Minyong (author)
Quinn, Thomas R. (author)
University of Washington
Shin, Eun Jin (author)
Barrow, Kirk S.S. (author)
University of Illinois at Urbana-Champaign
Dekel, Avishai (author)
Hebrew University of Jerusalem
Oh, Boon Kiat (author)
University of Connecticut
Mandelker, Nir (author)
Hebrew University of Jerusalem
Teyssier, Romain (author)
Hummels, Cameron (author)
Maji, Soumily (author)
Man, Antonio (author)
Mayerhofer, Paul (author)
Redwood High School
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 (creator_code:org_t)
 
2024
2024
English.
In: Astrophysical Journal. - 0004-637X. ; 962:1
Related links:
http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
https://doi.org/10.3...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We analyze the circumgalactic medium (CGM) for eight commonly-used cosmological codes in the AGORA collaboration. The codes are calibrated to use identical initial conditions, cosmology, heating and cooling, and star formation thresholds, but each evolves with its own unique code architecture and stellar feedback implementation. Here, we analyze the results of these simulations in terms of the structure, composition, and phase dynamics of the CGM. We show properties such as metal distribution, ionization levels, and kinematics are effective tracers of the effects of the different code feedback and implementation methods, and as such they can be highly divergent between simulations. This is merely a fiducial set of models, against which we will in the future compare multiple feedback recipes for each code. Nevertheless, we find that the large parameter space these simulations establish can help disentangle the different variables that affect observable quantities in the CGM, e.g., showing that abundances for ions with higher ionization energy are more strongly determined by the simulation’s metallicity, while abundances for ions with lower ionization energy are more strongly determined by the gas density and temperature.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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