2 citations · 2 across the 5 of their papers we have counts for
6 papers
hosts from the past: reheating neutron stars with supernova-sourced ALPs
Debajit Bose, Sougata Ganguly, Tanmoy Kumar +1
Axion-like particles (ALPs) can be copiously produced in the hot and dense environment of a core-collapse supernova. If their mass is within an order of magnitude of the supernova…
Bipartite Solution to the Lithium Problem
Sougata Ganguly, Tae Hyun Jung, Tae-Sun Park +1
The primordial lithium problem remains a persistent motivation for new-physics modifications of Big Bang nucleosynthesis, yet the precision of the observed deuterium abundance now…
Probing Heavy Dark Matter in Red Giants
Sougata Ganguly, Minxi He, Chang Sub Shin +2
Red giants (RGs) provide a promising astrophysical environment for capturing dark matter (DM) via elastic scattering with stellar nuclei. Captured DM particles migrate toward the h…
Consistent fitting in big bang nucleosynthesis analysis
Sougata Ganguly, Tae Hyun Jung, Seokhoon Yun
The effective number of neutrino species, , serves as a key fitting parameter extensively employed in cosmological studies. In this work, we point out a fundamental in…
Fresh look at the diffuse ALP background from supernovae
Francisco R. Candón, Sougata Ganguly, Maurizio Giannotti +3
Protoneutron stars, highly compact objects formed in the core of exploding supernovae (SNe), are powerful sources of axion-like particles (ALPs). In the SN core, ALPs are dominantl…
Constraining MeV to 10 GeV majoron by Big Bang Nucleosynthesis
Sanghyeon Chang, Sougata Ganguly, Tae Hyun Jung +2
We estimate the Big Bang nucleosynthesis (BBN) constraint on the majoron in the mass range between to which dominantly decays into the standard model…