1.5k citations · 3.9k across the 32 of their papers we have counts for
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Estimation of Cosmological Parameters from HI Observations of Post-reionization Epoch
Somnath Bharadwaj, Shiv K. Sethi, Tarun Deep Saini
The emission from neutral hydrogen (HI) clouds in the post-reionization era (z < 6), too faint to be individually detected, is present as a diffuse background in all low frequency…
Direction Dependent Non-gaussianity in High-z Supernova Data
Shashikant Gupta, Tarun Deep Saini, Tanmoy Laskar
The most detailed constraints on the accelerating expansion of the universe and details of nature of dark energy are derived from the high redshift supernova data, assuming that th…
Cosmology with decaying tachyon matter
A. Das, Shashikant Gupta, Tarun Deep Saini +1
We investigate the case of a homogeneous tachyon field coupled to gravity in a spatially flat Friedman-Robertson-Walker spacetime. Assuming the field evolution to be exponentially…
Rejoinder to "No Evidence of Dark Energy Metamorphosis", astro-ph/0404468
Ujjaini Alam, Varun Sahni, Tarun Deep Saini +1
In a recent paper (astro-ph/0311364) Alam et al argued that the SNe data of Tonry et al 2003 and Barris et al 2003 appear to favour DE which evolves in time, provided no other prio…
Is there Supernova Evidence for Dark Energy Metamorphosis ?
Ujjaini Alam, Varun Sahni, Tarun Deep Saini +1
We reconstruct the equation of state of dark energy (DE) using a recently released data set containing 172 type Ia supernovae without assuming the prior (in c…
Revealing the Nature of Dark Energy Using Bayesian Evidence
T. D. Saini, J. Weller, S. L. Bridle
We apply the Bayesian concept of `evidence' to reveal systematically the nature of dark energy from present and future supernova luminosity distance measurements. We express the un…