Abstract Details
| Name: Subhabrata Majumdar Affiliation: TIFR Conference ID: ASI2018_912 Title : Cosmological Missing Baryons hidden in CGM Authors and Co-Authors : Priyanka Singh (RRI/IUCAA) Biman B Nath (RRI) Joseph Silk (IAP) Abstract Type : Contributed Talk Abstract Category : General Relativity and Cosmology Abstract : Baryons, dark matter and dark energy are the primary components of the energy budget in our Universe. Unlike dark matter and dark energy, we are luckier with baryons in the sense that we know what it is. Moreover, we can directly observe baryons. However, a census of baryons shows that, even now, around 30% of baryons are unaccounted for, giving rise to the 'missing baryon' problem. Using stacked observations of galaxies from Planck SZ maps and ROSAT XRay maps, we can robustly estimate the amount and profiles of baryons in a cosmological ensemble of circum-galactic medium (CGM) around galaxies. These newly discovered baryons can potentially solve the missing baryon problem. |