Active Galactic Nuclei Feedback and Clusters

Journal of astrophysics and astronomy

Biman B. Nath1¹ 

[1] Raman Research Institute, Sadashivanagar, Bangalore 560 080, India.$$

关键词: Galaxies: cluster: general;    galaxies: intergalactic medium;    X-rays: galaxies: clusters;    cosmology: miscellaneous.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

The Intracluster Medium (ICM) is believed to have been affected by feedback from Active Galactic Nuclei (AGN) and/or supernovae-driven winds. These sources are supposed to have injected entropy into the ICM gas. The recently determined universal pressure profile of the ICM gas has been used and after comparing with the entropy profile of the gas from gravitational effects of the dark matter halo, the additional entropy injected by non-gravitational sources, as a function of the total cluster mass is determined. The current observational data of red-shift evolution of cluster scaling relation is shown that allow models in which the entropy injection decreases at high red-shift.

【 授权许可】

Unknown