449 citations · 2.9k across the 64 of their papers we have counts for
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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…
Constraining decaying dark matter with BOSS data and the effective field theory of large-scale structures
Théo Simon, Guillermo Franco Abellán, Peizhi Du +2
We update cosmological constraints on two decaying dark matter models in light of BOSS-DR12 data analyzed under the Effective Field Theory of Large-Scale Structures (EFTofLSS) form…
Correlating Gravitational Wave and Gamma-ray Signals from Primordial Black Holes
Kaustubh Agashe, Jae Hyeok Chang, Steven J. Clark +3
Asteroid-mass primordial black holes (PBH) can explain the observed dark matter abundance while being consistent with the current indirect detection constraints. These PBH can prod…
Free-streaming and Coupled Dark Radiation Isocurvature Perturbations: Constraints and Application to the Hubble Tension
Subhajit Ghosh, Soubhik Kumar, Yuhsin Tsai
Dark radiation (DR) appears as a new physics candidate in various scenarios beyond the Standard Model. While it is often assumed that perturbations in DR are adiabatic, they can ea…
Non-Gaussian Stochastic Gravitational Waves from Phase Transitions
Soubhik Kumar, Raman Sundrum, Yuhsin Tsai
Cosmological phase transitions in the primordial universe can produce anisotropic stochastic gravitational wave backgrounds (GWB), similar to the cosmic microwave background (CMB).…
"Non-Local" Effects from Boosted Dark Matter in Indirect Detection
Kaustubh Agashe, Steven J. Clark, Bhaskar Dutta +1
Indirect dark matter (DM) detection typically involves the observation of standard model (SM) particles emerging from DM annihilation/decay inside regions of high dark matter conce…