212 citations · 1.7k across the 68 of their papers we have counts for
4 papers · 1 filter
Searching for relativistic axions in the sky
Arpan Kar, Tanmoy Kumar, Sourov Roy +1
Relativistic axions produced in decays of dark matter (DM) partially convert to photons after traversing the galactic magnetic field, gi…
Baryon asymmetry and lower bound on right handed neutrino mass in fast expanding Universe: an analytical approach
Mainak Chakraborty, Sourov Roy
The expansion rate of the Universe deviates from its standard value when the total energy density includes contribution from a new scalar field apart from the radiation energy dens…
Can leptophilic-ALP be a solution to the muon anomaly?
Sougata Ganguly, Biswarup Mukhopadhyaya, Sourov Roy
In the light of recent measurement of muon , we investigate the phenomenological implications of an axion-like particle (ALP) which only couples to the standard model charge…
Imprints of MeV Scale Hidden Dark Sector at Planck Data
Sougata Ganguly, Sourov Roy, Abhijit Kumar Saha
New light species can contribute to the number of effective relativistic degrees of freedom () at Cosmic Microwave Background (CMB) which is precisely measured by Plan…