Dark matter in compact stars
WDs and neutron stars are far-reaching and multi-faceted laboratories in the hunt for dark
matter. We review detection prospects of wave-like, particulate, macroscopic and black hole …
matter. We review detection prospects of wave-like, particulate, macroscopic and black hole …
Primordial black holes and their gravitational-wave signatures
In the recent years, primordial black holes (PBHs) have emerged as one of the most
interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could …
interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could …
[HTML][HTML] Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
S Vagnozzi - Journal of High Energy Astrophysics, 2023 - Elsevier
Various pulsar timing array (PTA) experiments (NANOGrav, EPTA, PPTA, CPTA, including
data from InPTA) very recently reported evidence for excess red common-spectrum signals …
data from InPTA) very recently reported evidence for excess red common-spectrum signals …
Scalar-induced gravitational wave interpretation of PTA data: the role of scalar fluctuation propagation speed
S Balaji, G Domènech… - Journal of Cosmology and …, 2023 - iopscience.iop.org
Pulsar timing arrays gathered evidence of the presence of a gravitational wave background
around nHz frequencies. If the gravitational wave background was induced by large and …
around nHz frequencies. If the gravitational wave background was induced by large and …
PBHs and GWs from 𝕋2-inflation and NANOGrav 15-year data
In this paper, we propose a novel mechanism in Bbb T 2-inflation to enhance the power
spectrum large enough to seed primordial black holes (PBHs) formation. To accomplish this …
spectrum large enough to seed primordial black holes (PBHs) formation. To accomplish this …
Singling out SO (10) GUT models using recent PTA results
In this work, we construct promising model-building routes towards SO (10) grand unified
theory inflation and examine their ability to explain the recent pulsar timing arrays (PTAs) …
theory inflation and examine their ability to explain the recent pulsar timing arrays (PTAs) …
Translating nano-Hertz gravitational wave background into primordial perturbations taking account of the cosmological QCD phase transition
The evidence of the nano-Hertz stochastic gravitational wave (GW) background is reported
by multiple pulsar timing array collaborations. While a prominent candidate of the origin is …
by multiple pulsar timing array collaborations. While a prominent candidate of the origin is …
Confronting sound speed resonance with pulsar timing arrays
The stochastic signal detected by pulsar timing arrays (PTAs) has raised great interest in
understanding its physical origin. Assuming the signal is a cosmological gravitational-wave …
understanding its physical origin. Assuming the signal is a cosmological gravitational-wave …
Probing the equation of state of the early Universe with pulsar timing arrays
The recently released data by pulsar timing array (PTA) collaborations have amassed
substantial evidence corroborating the existence of a stochastic signal consistent with a …
substantial evidence corroborating the existence of a stochastic signal consistent with a …