3 citations · 4 across the 4 of their papers we have counts for
5 papers
Constraints on High-Frequency Gravitational Waves from Graviton-Photon Conversion in the M87 Galaxy
Aman Gupta, Pratik Majumdar, Sourov Roy +1
High-frequency gravitational waves, particularly in the range , represent a compelling probe of physics beyond the Standard Model. Due to the absence…
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…
Contextual Online Uncertainty-Aware Preference Learning for Human Feedback
Nan Lu, Ethan Lee, Ethan X. Fang +1
Reinforcement Learning from Human Feedback (RLHF) has become a pivotal paradigm in artificial intelligence to align large models with human preferences. In this paper, we propose a…
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…
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…