Cosmological phase transitions: From perturbative particle physics to gravitational waves

P Athron, C Balázs, A Fowlie, L Morris, L Wu - Progress in Particle and …, 2024 - Elsevier
Gravitational waves (GWs) were recently detected for the first time. This revolutionary
discovery opens a new way of learning about particle physics through GWs from first-order …

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 …

The second data release from the European Pulsar Timing Array-III. Search for gravitational wave signals

J Antoniadis, P Arumugam, S Arumugam… - Astronomy & …, 2023 - aanda.org
We present the results of the search for an isotropic stochastic gravitational wave
background (GWB) at nanohertz frequencies using the second data release of the European …

Recent gravitational wave observation by pulsar timing arrays and primordial black holes: The importance of non-Gaussianities

G Franciolini, AJ Iovino, V Vaskonen, H Veermäe - Physical Review Letters, 2023 - APS
We study whether the signal seen by pulsar timing arrays (PTAs) may originate from
gravitational waves (GWs) induced by large primordial perturbations. Such perturbations …

The second data release from the European Pulsar Timing Array-IV. Implications for massive black holes, dark matter, and the early Universe

J Antoniadis, P Arumugam, S Arumugam… - Astronomy & …, 2024 - aanda.org
The European Pulsar Timing Array (EPTA) and Indian Pulsar Timing Array (InPTA)
collaborations have measured a low-frequency common signal in the combination of their …

The gravitational-wave background null hypothesis: Characterizing noise in millisecond pulsar arrival times with the Parkes Pulsar Timing Array

DJ Reardon, A Zic, RM Shannon… - The Astrophysical …, 2023 - iopscience.iop.org
The noise in millisecond pulsar (MSP) timing data can include contributions from observing
instruments, the interstellar medium, the solar wind, solar system ephemeris errors, and the …

[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 …

Footprints of the QCD crossover on cosmological gravitational waves at pulsar timing arrays

G Franciolini, D Racco, F Rompineve - Physical Review Letters, 2024 - APS
Pulsar timing arrays (PTAs) have reported evidence for a stochastic gravitational wave (GW)
background at nanohertz frequencies, possibly originating in the early Universe. We show …

The NANOGrav 15 yr data set: Bayesian limits on gravitational waves from individual supermassive black hole binaries

G Agazie, A Anumarlapudi, AM Archibald… - The Astrophysical …, 2023 - iopscience.iop.org
Evidence for a low-frequency stochastic gravitational-wave background has recently been
reported based on analyses of pulsar timing array data. The most likely source of such a …

Implications for the non-Gaussianity of curvature perturbation from pulsar timing arrays

L Liu, ZC Chen, QG Huang - Physical Review D, 2024 - APS
The recently released data by pulsar timing array (PTA) collaborations present strong
evidence for a stochastic signal consistent with a gravitational-wave background. Assuming …