nIFTy galaxy cluster simulations II: radiative models

Autor: A. M. Beck, Alexander Knebe, V. Perret, Scott T. Kay, Pascal J. Elahi, Richard Newton, Giuseppe Murante, Frazer R. Pearce, Neal Katz, Shuiyao Huang, Federico Sembolini, Daniel Cunnama, Stefano Borgani, Sean February, Weiguang Cui, Gustavo Yepes, Ewald Puchwein, Romeel Davé, Chris Power, Joop Schaye, Alexandro Saro, Romain Teyssier, Ian G. McCarthy
Přispěvatelé: ITA, GBR, FRA, DEU, University of Zurich, Sembolini, Federico, Elahi, Pascal Jahan, Pearce, Frazer R., Power, Chri, Knebe, Alexander, Kay, Scott T., Cui, Weiguang, Yepes, Gustavo, Beck, Alexander M., Borgani, Stefano, Cunnama, Daniel, Davé, Romeel, February, Sean, Huang, Shuiyao, Katz, Neal, Mccarthy, Ian G., Murante, Giuseppe, Newton, Richard D. A., Perret, Valentin, Puchwein, Ewald, Saro, Alexandro, Schaye, Joop, Teyssier, Romain
Jazyk: angličtina
Předmět:
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
530 Physics
Cosmology: theory
Dark matter
Galaxies: haloes
Methods: numerical
Astronomy and Astrophysics
Space and Planetary Science
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
haloe [Galaxies]
1912 Space and Planetary Science
theory [Cosmology]
0103 physical sciences
Cluster (physics)
Radiative transfer
Entropy (information theory)
010303 astronomy & astrophysics
Galaxy cluster
Astrophysics::Galaxy Astrophysics
QB
Physics
numerical [Methods]
010308 nuclear & particles physics
Star formation
methods: numerical
galaxies: haloes
cosmology: theory
dark matter
Limiting
Astronomy and Astrophysic
Astrophysics - Astrophysics of Galaxies
Astrophysics of Galaxies (astro-ph.GA)
10231 Institute for Computational Science
3103 Astronomy and Astrophysics
Astrophysics - Cosmology and Nongalactic Astrophysics
Zdroj: Monthly Notices of the Royal Astronomical Society, 459, 2973-2991
Monthly Notices of the Royal Astronomical Society
NASA Astrophysics Data System
Sembolini, F, Elahi, P J, Pearce, F R, Power, C, Knebe, A, Kay, S, Cui, W, Yepes, G, Beck, A M, Borgani, S, Cunnama, D, Davé, R, February, S, Huang, S, Katz, N, McCarthy, I G, Murante, G, Newton, R, Perret, V, Puchwein, E, Saro, A, Schaye, J & Teyssier, R 2016, ' nIFTy galaxy cluster simulations II: radiative models ', Monthly Notices of the Royal Astronomical Society, vol. 459, no. 3, pp. 2973-2991 . https://doi.org/10.1093/mnras/stw800
ISSN: 0035-8711
1365-2966
DOI: 10.1093/mnras/stw800
Popis: We have simulated the formation of a massive galaxy cluster (M$_{200}^{\rm crit}$ = 1.1$\times$10$^{15}h^{-1}M_{\odot}$) in a $\Lambda$CDM universe using 10 different codes (RAMSES, 2 incarnations of AREPO and 7 of GADGET), modeling hydrodynamics with full radiative subgrid physics. These codes include Smoothed-Particle Hydrodynamics (SPH), spanning traditional and advanced SPH schemes, adaptive mesh and moving mesh codes. Our goal is to study the consistency between simulated clusters modeled with different radiative physical implementations - such as cooling, star formation and AGN feedback. We compare images of the cluster at $z=0$, global properties such as mass, and radial profiles of various dynamical and thermodynamical quantities. We find that, with respect to non-radiative simulations, dark matter is more centrally concentrated, the extent not simply depending on the presence/absence of AGN feedback. The scatter in global quantities is substantially higher than for non-radiative runs. Intriguingly, adding radiative physics seems to have washed away the marked code-based differences present in the entropy profile seen for non-radiative simulations in Sembolini et al. (2015): radiative physics + classic SPH can produce entropy cores. Furthermore, the inclusion/absence of AGN feedback is not the dividing line -as in the case of describing the stellar content- for whether a code produces an unrealistic temperature inversion and a falling central entropy profile. However, AGN feedback does strongly affect the overall stellar distribution, limiting the effect of overcooling and reducing sensibly the stellar fraction.
Comment: 20 pages, 13 figures, submitted to MNRAS
Databáze: OpenAIRE
Externí odkaz: