3 papers
hep-ph2025
Using neutron stars to probe dark matter charged under a symmetry
Nicole F. Bell, Giorgio Busoni, Avirup Ghosh
Kinetic heating of old cold neutron stars, via the scattering of dark matter with matter in the star, provides a promising way to probe the nature of dark matter interactions. We c…
hep-ph2024
Neutrino portals to MeV WIMPs with s-channel mediators
Nicole F. Bell, Matthew J. Dolan, Avirup Ghosh +1
Large-scale neutrino detectors currently under construction will have the unique ability to probe the annihilation of low-mass thermal-relic dark matter to neutrinos. This represen…
gr-qc2024
Time evolution of the equation of state during perturbative reheating and its impact on the inflationary tensor perturbation spectrum
Avirup Ghosh, Deep Ghosh
The spectrum of inflationary tensor perturbations is one of the very few available probes of the post-inflationary reheating epoch, and it is strongly influenced by the Universe's…