3.1k citations · 12.1k across the 77 of their papers we have counts for
80 papers
Probing multi-state dark matter via optical absorption lines in DESI spectra
Anoma Ganguly, Shadab Alam
We search for dark matter through absorption lines imprinted on the spectra of background sources whose sightlines pass through foreground dark matter halos. Such a line is a gener…
Disentangling Stellar Mass and Environmental Effects on eROSITA AGN Activity using multi-wavelength data from GAMA, WISE, GALEX, and DESI Legacy Survey
Navya Saraswat, Shadab Alam, Subhabrata Majumdar
We use a stellar-mass complete sample of galaxies from GAMA/eFEDS to test whether AGN activity depends on environment independent of stellar mass. To isolate this e…
Cosmological perturbations with gravity scalarons : Galaxy power spectra and the scalaron mass
Abhijit Talukdar, Sanjeev Kalita, Shadab Alam
In this paper we study cosmological perturbations with gravity scalaron. We consider epoch of transition from early general relativity (GR) phase to late time non-GR phase o…
Cosmology-Independent Constraints on the Etherington Relation and SNeIa Absolute Magnitude Evolution from DESI-DR2
Sourav Das, Surhud More, Shadab Alam
We carry out a test of the fundamental Etherington relation (cosmic distance duality relation) which relates the luminosity distance and angular diameter distance $D_{\…
Stabilizing simulation-based cosmological Fisher forecasts: a case study using the Voronoi volume function
Saee Dhawalikar, Aseem Paranjape, Shadab Alam
Forecasting cosmological constraints from halo-based statistics often suffers from instability in derivative estimates, especially when the number of simulations is limited. This i…
Detection of cosmological dipoles aligned with transverse peculiar velocities
Yan-Chuan Cai, John A. Peacock, Anna de Graaff +1
Peculiar velocities encode rich cosmological information, but their transverse components are hard to measure. Here, we present the first observations of a novel effect of transver…