Abstract Details

Name: Rudrani Kar Chowdhury
Affiliation: Presidency University
Conference ID: ASI2017_517
Title : X-ray properties of galaxy groups
Authors and Co-Authors : Dr. Suchetana Chatterjee Presidency university
Abstract Type : Poster
Abstract Category : Extragalactic astronomy
Abstract : Galaxies that harbor active super massive black holes in their centers are called active galactic nuclei (AGN). From several observations it has been seen that AGN, residing at the centers of galaxy clusters are pouring huge amount of energy on the surrounding X-ray gas and are displacing the hot X-ray gas outward. The same phenomenon has been observed in galaxy groups too. This phenomenon is referred as AGN feedback in the literature. Feedback from AGN has a very profound effect on structure formation. By studying the X- ray surface brightness profiles of simulated galaxy groups we now theoretically evaluate the effect of AGN feedback on the gas in the intra-cluster (group) medium. In this work, we used the cosmological simulation from DiMatteo et al. 2008 to study the effect of AGN feedback on the X-Ray surface brightness profiles. Our result qualitatively matches the observational result which reveals that in the case of AGN feedback the X-ray gas is indeed underdense. Our next goal is to use a bigger cosmological data and look for the X-ray properties of galaxy groups and studying the co-evolution of the central black hole and the host galaxy. Comparing our results with observed surface brightness profiles of AGN makes the final goal of this work.