10 citations · 12 across the 7 of their papers we have counts for
7 papers
Cosmology with Intensity Mapping via Statistics Beyond the Power Spectrum in the SKAO Era
Suman Majumdar, Debanjan Sarkar, Leon Noble +38
The cosmological distribution of neutral hydrogen (HI) during the post-reionization era is highly non-Gaussian due to the underlying non-linear structure formation, complex galaxy…
Primordial magnetic fields in the light of upcoming post-EoR Lyman- and 21-cm observations
Arko Bhaumik, Sourav Pal, Supratik Pal
The Lorentz force exerted by a primordial magnetic field (PMF) on the coupled baryon-dark matter system may enhance total matter power at small scales after recombination. In the p…
Neutrino self-interactions in post-reionization era: Lyman-, 21-cm and cross-spectra
Sourav Pal, Supratik Pal
Neutrino self-interactions delay the onset of free-streaming in the early universe, leaving distinct, scale-dependent signatures on the matter power spectrum. We investigate these…
Redshift-space 21-cm bispectrum multipoles as an SKA-era gravity test in the post-reionization Universe
Sourav Pal, Debanjan Sarkar
The redshifted 21-cm line from neutral hydrogen ($\textrm{H}\textsc{i}$) enables volumetric intensity mapping of large-scale structure in the post-reionization Universe. In anticip…
Tracing Signatures of Modified Gravity in Redshift-Space Galaxy Bispectrum Multipoles: Prospects for Euclid
Sourav Pal, Debanjan Sarkar, Alejandro Aviles
We study the galaxy bispectrum multipoles in the Hu-Sawicki gravity model, where a scalar degree of freedom mediates a fifth force that is screened in high-density environme…
Redshift-space galaxy bispectrum in presence of massive neutrinos: A multipole expansion approach for Euclid
Sourav Pal, Debanjan Sarkar, Rickmoy Samanta +1
Massive neutrinos imprint distinctive signatures on the evolution of cosmic structures, notably suppressing small-scale clustering. We investigate the impact of massive neutrinos o…
Exploring neutrino interactions in light of present and upcoming galaxy surveys
Sourav Pal, Rickmoy Samanta, Supratik Pal
In the standard cosmological framework, neutrinos begin to free-stream after the weak interaction phase ends in the early universe, at a temperature of approximately $T \sim 1 \, {…