449 citations · 2.9k across the 64 of their papers we have counts for
3 papers · 1 filter
Unraveling Cosmological Anisotropies within Stochastic Gravitational Wave Backgrounds
Yanou Cui, Soubhik Kumar, Raman Sundrum +1
Identifying the anisotropies in a cosmologically sourced stochastic gravitational wave background (SGWB) would be of significance in shedding light on the nature of primordial inho…
Challenges in Interpreting the NANOGrav 15-Year Data Set as Early Universe Gravitational Waves Produced by ALP Induced Instability
Michael Geller, Subhajit Ghosh, Sida Lu +1
In this paper, we study a possible early universe source for the recent observation of a stochastic gravitational wave background at the NANOGrav pulsar timing array. The source is…
Probing Cosmological Particle Production and Pairwise Hotspots with Deep Neural Networks
Taegyun Kim, Jeong Han Kim, Soubhik Kumar +3
Particles with masses much larger than the inflationary Hubble scale, , can be pair-produced non-adiabatically during inflation. Due to their large masses, the produced partic…