3 papers
hep-ph2026
Impact of Primordial Black Holes Induced Neutrinos on the Cosmic 21-cm Brightness Temperature
Prabhav Singh, Mansi Dhuria, Gaurav Goswami
We study the impact of neutrinos emitted from evaporating Primordial Black Holes (PBHs) on the global 21-cm absorption signal during the dark ages and pre-reionization epochs. PBHs…
astro-ph.CO2024
Learning from galactic rotation curves: a neural network approach
Bihag Dave, Gaurav Goswami
For a galaxy, given its observed rotation curve, can one directly infer parameters of the dark matter density profile (such as dark matter particle mass , scaling parameter ,…
astro-ph.CO2023
ULDM self-interactions, tidal effects and tunnelling out of satellite galaxies
Bihag Dave, Gaurav Goswami
It is well-known that Dark Matter (DM) inside a satellite galaxy orbiting a host halo experiences a tidal potential. If DM is ultra-light, given its wave-like nature, one expects i…