3 citations · 3 across the 5 of their papers we have counts for
5 papers
Photon-dark photon oscillation in M87 and Crab Nebula environments
Tanmay Kumar Poddar, Sourov Roy, Pratick Sarkar
Compact astrophysical systems such as neutron stars and black holes provide powerful laboratories for testing feebly coupled dark photons (DPs). We investigate light DPs kineticall…
Constraining Inflation via FIMP dark matter using the -function with collider implications
Sarif Khan, Sourov Roy, Ananya Tapadar
The present study connects inflation and freeze-in type dark matter (DM) within the same setup. Although the observables in these two phenomena lie at vastly different energy scale…
Constraining eV-scale axion-like particle dark matter: insights from the M87 Galaxy
Arpan Kar, Sourov Roy, Pratick Sarkar
Axion-like particles (ALPs) can account for the observed dark matter (DM) of the Universe and if their masses are at the eV scale, they can decay into infrared, optical and ultravi…
An EFT origin of Secluded Dark Matter
AseshKrishna Datta, Sourov Roy, Abhijit Kumar Saha +1
The present study aims to unveil a scenario with a non-minimal secluded dark sector (DS) in an effective field theory (EFT) framework. To explore this, we have examined a suitable…
Exploring Axions through the Photon Ring of a Spherically Symmetric Black Hole
Sourov Roy, Pratick Sarkar, Subhadip Sau +1
In this study, we examine the phenomenon of photon axion conversion occurring in the spacetime surrounding a black hole. Specifically, we focus on the potential existence of a magn…