3 papers
astro-ph.CO2025
Turning dispersion into signal: density-split analyses of pairwise velocities
Aritra Kumar Gon, Yan-Chuan Cai
Pairwise velocities of the large-scale structure encode valuable information about the growth of structure. They can be observed indirectly through redshift-space distortions and t…
astro-ph.CO2024
Estimators for the cross-pairwise kSZ effect: forecasts for the dark energy and modified gravity parameters with Simons Observatory and CMB-S4
Aritra Kumar Gon, Rishi Khatri
We present and study a new cross-pairwise estimator to extract the kinetic Sunyaev Zeldovich (kSZ) signal from galaxy clusters. The existing pairwise kSZ method involves pairing cl…
nlin.SI2019
Duality in a hyperbolic interaction model integrable even in a strong confinement: Multi-soliton solutions and field theory
Aritra Kumar Gon, Manas Kulkarni
Models that remain integrable even in confining potentials are extremely rare and almost non-existent. Here, we consider a one-dimensional hyperbolic interaction model, which we ca…