activity
19992026
most citedStatefinder -- a new geometrical diagnostic of dark energy

1.5k citations · 3.9k across the 32 of their papers we have counts for

collaborators

32 papers

astro-ph.CO2026

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…

astro-ph.CO2025

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…

astro-ph.CO2018★ 62 cited

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…

astro-ph.GA2016★ 1 cited

Effect of dark matter halo on global spiral modes in a collisionless galactic disc

Soumavo Ghosh, Tarun Deep Saini, Chanda J. Jog

Low surface brightness (LSB) galaxies are dominated by dark matter halo from the innermost radii; hence they are ideal candidates to investigate the influence of dark matter on dif…

astro-ph.GA2016★ 1 cited

Modal analysis of gravitational instabilities in nearly Keplerian, counter-rotating collisionless discs

Mamta Gulati, Tarun Deep Saini

We present a modal analysis of instabilities of counter-rotating, self-gravitating collisionless stellar discs, using the recently introduced modified WKB formulation of spiral den…

astro-ph.GA2016★ 1 cited

A modified WKB formulation for linear eigenmodes of a collisionless self-gravitating disc in the epicyclic approximation

Mamta Gulati, Tarun Deep Saini

The short--wave asymptotics (WKB) of spiral density waves in self-gravitating stellar discs is well suited for the study of the dynamics of tightly--wound wavepackets. But the text…