40 citations · 121 across the 7 of their papers we have counts for
7 papers · 1 filter
Scattering of emission lines in galaxy cluster cores: measuring electron temperature
S. Khedekar, E. Churazov, S. Sazonov +2
The central galaxies of some clusters can be strong emitters in the Ly and H lines. This emission may arise either from the cool/warm gas located in the cool core of the clus…
Bias from gas inhomogeneities in the pressure profiles as measured from X-ray and SZ observations
S. Khedekar, E. Churazov, A. Kravtsov +4
X-ray observations of galaxy clusters provide emission measure weighted spectra, arising from a range of density and temperature fluctuations in the intra-cluster medium (ICM). Thi…
Cosmology with the largest galaxy cluster surveys: Going beyond Fisher matrix forecasts
Satej Khedekar, Subhabrata Majumdar
We make the first detailed MCMC likelihood study of cosmological constraints that are expected from some of the largest, ongoing and proposed, cluster surveys in different wave-ban…
Neutral Hydrogen Tully Fisher Relation: The case for Newtonian Gravity
Sayan Chakraborti, Satej Khedekar
Intrinsic luminosities are related to rotation velocities of disk galaxies by Tully Fisher (TF) relations. The Baryonic TF (BTF) relation has recently been explained with Dark Matt…
A new Tolman test of a cosmic distance duality relation at 21 cm
Satej Khedekar, Sayan Chakraborti
Under certain general conditions in an expanding universe, the luminosity distance (d_L) and angular diameter distance (d_A) are connected by the Etherington relation as d_L = d_A…
Using clusters in SZE + x-ray surveys as an ensemble of rulers to constrain cosmology
Satej Khedekar, Subhabrata Majumdar
Ongoing and upcoming surveys in x-rays and SZE are expected to jointly detect many clusters due to the large overlap in sky coverage. We show that, these clusters can be used as an…
Precision cosmology with a combination of wide and deep Sunyaev-Zeldovich cluster surveys
Satej Khedekar, Subhabrata Majumdar, Sudeep Das
We show the advantages of a wedding cake design for Sunyaev-Zel'dovich cluster surveys. We show that by dividing up a cluster survey into a wide and a deep survey, one can essentia…