Abstract Details

Name: Suchetana Chatterjee
Affiliation: Presidency University
Conference ID: ASI2021_131
Title : Halo Occupation Distribution of Quasars: Evolution with Redshift
Authors and Co-Authors : Suchetana Chatterjee, Anwesh Majumder, Rudrani Kar Chowdhury, Anik Parui, Kaustav Mitra, and Nishikanta Khandai
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : Quasar clustering offers a great probe to understand structure formation in the high redshift Universe and provide us information on the co-evolution of quasars along with their host dark matter halos. One of the best tools to understand clustering of quasars and the quasar-halo connection happens to be a technique, known as the halo occupation distribution (HOD). The HOD formalism, when applied to quasars provide us a full knowledge of the host halo mass distribution of quasars over a range of redshifts. Currently, in most of the HOD studies of quasars, the HOD has been assumed to depend weakly on redshift, since there is a paucity of theoretical studies on the redshift evolution of the quasar HOD. In this work we perform the first study to understand the redshift evolution of the quasar HOD from a cosmological hydrodynamic simulation (MassiveBlack-II) and show that, given the current status of observations, the redshift evolution of the quasar HOD do not affect clustering studies or studies that involve stacking analysis of quasars.