95 citations · 589 across the 45 of their papers we have counts for
6 papers · 1 filter
Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array
Peter Athron, Marco Chianese, Satyabrata Datta +2
Blue-tilted Gravitational Waves (BGWs) have been proposed as a potential candidate for the cosmic gravitational waves detected by Pulsar Timing Arrays (PTA). In the standard cosmol…
Excess Radiation from Axion-Photon Conversion
Andrea Addazi, Salvatore Capozziello, Qingyu Gan +2
Two notable anomalies in radio observations -- the excess radiation in the Rayleigh-Jeans tail of the cosmic microwave background, revealed by ARCADE2, and the twice-deeper absorpt…
Cosmic superstrings, metastable strings and ultralight primordial black holes: from NANOGrav to LIGO and beyond
Satyabrata Datta, Rome Samanta
While topologically stable cosmic strings are disfavoured by the recent observation of nHz stochastic gravitational waves (GW) by Pulsar Timing Arrays (PTA), e.g., NANOGrav, cosmic…
Probing flavored regimes of leptogenesis with gravitational waves from cosmic strings
Marco Chianese, Satyabrata Datta, Gennaro Miele +2
Cosmic strings radiate detectable gravitational waves in models featuring high-scale symmetry breaking, e.g., high-scale leptogenesis. In this Letter, for the first time, we show t…
Tomography of flavoured leptogenesis with primordial blue gravitational waves
Marco Chianese, Satyabrata Datta, Rome Samanta +1
We explore a scenario where an early epoch of matter domination is driven by the mass scale of the right-handed neutrinos, which also characterizes the different flavour regi…
Cogenesis of baryon and dark matter with PBH and QCD axion
Debasish Borah, Nayan Das, Suruj Jyoti Das +1
With entropy injection, an early matter-dominated epoch (EMD) impels the axion decay constant towards larger values to produce correct axion dark matter (DM) abundance, there…