Dark matter in compact stars

J Bramante, N Raj - Physics Reports, 2024 - Elsevier
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 …

Primordial black holes and their gravitational-wave signatures

E Bagui, S Clesse, V De Luca, JM Ezquiaga… - Living Reviews in …, 2025 - Springer
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 …

[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 …

Limits on scalar-induced gravitational waves from the stochastic background by pulsar timing array observations

YF Cai, XC He, XH Ma, SF Yan, GW Yuan - Science bulletin, 2023 - Elsevier
Abstract Recently, the NANOGrav, PPTA, EPTA, and CPTA Collaborations independently
reported their evidence of the Stochastic Gravitational Waves Background (SGWB). While …

Singling out SO (10) GUT models using recent PTA results

S Antusch, K Hinze, S Saad, J Steiner - Physical Review D, 2023 - APS
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) …

NANOGrav signal from axion inflation

X Niu, MH Rahat - Physical Review D, 2023 - APS
Several pulsar timing arrays including NANOGrav, EPTA, PPTA, and CPTA have recently
reported the observation of a stochastic background of gravitational wave spectrum in the …

Superheavy quasistable strings and walls bounded by strings in the light of NANOGrav 15 year data

G Lazarides, R Maji, Q Shafi - Physical Review D, 2023 - APS
Composite topological structures such as superheavy “quasistable strings”(QSS) and “walls
bounded by strings”(WBS) arise in realistic extensions of the Standard Model of high energy …

Axionic domain walls at Pulsar Timing Arrays: QCD bias and particle friction

S Blasi, A Mariotti, A Rase, A Sevrin - Journal of High Energy Physics, 2023 - Springer
A bstract The recent results from the Pulsar Timing Array (PTA) collaborations show the first
evidence for the detection of a stochastic background of gravitational waves at the nHz …

Cosmological interpretation for the stochastic signal in pulsar timing arrays

YM Wu, ZC Chen, QG Huang - Science China Physics, Mechanics & …, 2024 - Springer
The pulsar timing array (PTA) collaborations have recently reported compelling evidence for
a stochastic signal consistent with a gravitational-wave background. In this paper, we …

Did we hear the sound of the Universe boiling? Analysis using the full fluid velocity profiles and NANOGrav 15-year data

T Ghosh, A Ghoshal, HK Guo, F Hajkarim… - … of Cosmology and …, 2024 - iopscience.iop.org
In this paper, we analyse sound waves arising from a cosmic phase transition where the full
velocity profile is taken into account as an explanation for the gravitational wave spectrum …