4 papers
Precision Analysis for Using Upcoming Multi-band Gravitational Wave Observations
Setabuddin, Md Riajul Haque, Ratna Koley +1
We investigate how multi-band gravitational wave (GW) observations can constrain the uncertainties in the Hubble parameter () using primordial black holes (PBHs) as possible s…
Axion-Photon Conversion in FLRW with Primordial Magnetic Fields: Explaining the Radio Excess
Setabuddin, Md Riajul Haque, Rajesh Karmakar +1
We explore the possibility of axion-photon conversion as a common origin of two low-frequency anomalies: the isotropic radio excess (ARCADE2) and the deep global 21-cm absorption t…
Primordial Gravitational Waves as Complementary Probe of Dark Matter Indirect Detection
Anish Ghoshal, Debarun Paul, Supratik Pal
We propose a novel cosmological probe of dark matter (DM) through inflationary primordial gravitational wave (GW) measurements highlighting its complementarity with traditional ind…
Gravitational Wave Signatures of Primordial Black Hole Reheating in Upcoming Interferometry Missions
Debarun Paul, Md Riajul Haque, Supratik Pal
We investigate the prospects of detecting a stochastic gravitational wave (GW) background from the primordial black hole (PBH) reheating epoch. If PBHs form during a non-standard c…