1.3k citations · 3.7k across the 70 of their papers we have counts for
3 papers · 1 filter
Theoretical and observational constraints on the HI intensity power spectrum
Hamsa Padmanabhan, T. Roy Choudhury, Alexandre Refregier
Mapping of the neutral hydrogen (HI) 21-cm intensity fluctuations across redshifts promises a novel and powerful probe of cosmology. The neutral hydrogen gas mass density, $Ω_{\rm…
Cosmological Constant from the Emergent Gravity Perspective
T. Padmanabhan, Hamsa Padmanabhan
Observations indicate that our universe is characterized by a late-time accelerating phase, possibly driven by a cosmological constant , with the dimensionless parameter $ΛL_P^2…
Probing reionization using quasar near-zones at redshift z ~ 6
Hamsa Padmanabhan, T. Roy Choudhury, R. Srianand
Using hydrodynamical simulations coupled to a radiative transfer code, we study the additional heating effects in the intergalactic medium (IGM) produced by quasars in th…