Thermal and non-thermal traces of AGN feedback: results from cosmological AMR simulations
Thermal and non-thermal traces of AGN feedback: results from cosmological AMR simulations
复制标题
AGN 反馈的热迹和非热迹:宇宙学 AMR 模拟的结果
DOI:
10.1093/mnras/sts213
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发表时间:
2013
影响因子:
4.8
通讯作者:
Gheller
中科院分区:
文献类型:
--
作者:
Brüggen;Gheller
We investigate the observable effects of feedback from active galactic nuclei (AGN) on non-thermal components of the intracluster medium (ICM). We have modelled feedback from AGN in cosmological simulations with the adaptive mesh refinement codeenzo, investigating three types of feedback that are sometimes called quasar, jet and radio mode. Using a small set of galaxy clusters simulated at high resolution, we model the injection and evolution of cosmic rays, as well as their effects on the thermal plasma. By comparing both the profiles of thermal gas to observed profiles from the ACCEPT sample and the secondary γ-ray emission to the available upper limits fromFermi, we discuss how the combined analysis of these two observables can constrain the energetics and mechanisms of feedback models in clusters. Those modes of AGN feedback that provide a good match to X-ray observations yield a γ-ray luminosity resulting from secondary cosmic rays that is about 10 times below the available upper limits fromFermi. Moreover, we investigate the injection of turbulent motions into the ICM from AGN, and the detectability of these motions via the analysis of line broadening of the Fexxiiiline. In the near future, deeper observations/upper limits of non-thermal emissions from galaxy clusters will yield stringent constraints on the energetics and modes of AGN feedback, even at early cosmic epochs.
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DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Ji;J. Wise;M. Alvarez;Tom Abel
通讯作者:
Tom Abel
影响因子:
6.5
作者:
T. Ensslin;C. Vogt
通讯作者:
C. Vogt
影响因子:
64.8
作者:
M. Brüggen;C. Kaiser
通讯作者:
C. Kaiser
DOI:
10.1086/430732
发表时间:
2005
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Brüggen;M. Hoeft;M. Ruszkowski
通讯作者:
M. Ruszkowski
DOI:
10.1086/170369
发表时间:
1991
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Loewenstein;E. Zweibel;M. Begelman
通讯作者:
M. Begelman