Abstract Details

Name: Anirban Chowdhary
Affiliation: Presidency University
Conference ID: ASI2021_264
Title : Direct Measurement of Mean Occupation Function of Quasars
Authors and Co-Authors : Anirban Chowdhary, Dr. Suchetana Chatterjee (Presidency University)
Abstract Type : Poster
Abstract Category : General Relativity and Cosmology
Abstract : According to the current model of AGN unification, obscured and unobscured quasars are believed to be part of the same population, while only having a different orientation with the line-of-sight of the observer. According to this simple orientation-based unification model, clustering properties of obscured and unobscured quasars are likely to be similar, being independent of their large scale environments. In this work we use the Halo Occupation Distribution (HOD) formalism to calculate the mean number of quasars as a function of the halo mass for both obscured and unobscured populations. In this technique, we cross-correlate quasar and cluster catalogs and directly calculate the moments of the quasar HOD. A simple power law fit to our observed mean occupation function (first moment of the HOD) hints toward a deeper picture of AGN unification.