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Unbiased Bayesian Inference of Peculiar Motions of Galaxies from Type Ia Supernovae Observations
Ujjwal Upadhyay, Tarun Deep Saini, Shiv K. Sethi
The peculiar motions of galaxies are powerful cosmological probes that trace the growth of structures and the distribution of matter in the universe, providing a means to investiga…
A Bayesian estimator for peculiar velocity correction in cosmological inference from supernovae data
Ujjwal Upadhyay, Tarun Deep Saini, Shiv K. Sethi
The peculiar motion of the host galaxies introduces bias in estimating cosmological parameters from supernova data. The coherent component of the peculiar motion is usually correct…
Measuring the Hubble constant: Gravitational wave observations meet galaxy clustering
Remya Nair, Sukanta Bose, Tarun Deep Saini
We show how the distances to binary black holes measured in gravitational wave observations with ground-based interferometers can be used to constrain the redshift-distance relatio…
Reconstructing the Properties of Dark Energy using Standard Sirens
Maryam Arabsalmani, Varun Sahni, Tarun Deep Saini
Future space-based gravity wave experiments such as the Big Bang Observatory (BBO), with their excellent projected, one sigma angular resolution, will measure the luminosity distan…
Non-Gaussianity and direction dependent systematics in HST key project data
Shashikant Gupta, Tarun Deep Saini
Two new statistics, namely and , based on extreme value theory, were derived in \cite{gupta08,gupta10}. We use these statistics to study direction dependence in the HS…
Accretion of Chaplygin gas upon black holes: Formation of faster outflowing winds
Ritabrata Biswas, Subenoy Chakraborty, Tarun Deep Saini +1
We study the accretion of modified Chaplygin gas upon different types of black hole. Modified Chaplygin gas is one of the best candidates for a combined model of dark matter and da…