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 …

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 second data release from the European Pulsar Timing Array-I. The dataset and timing analysis

J Antoniadis, S Babak, ASB Nielsen, CG Bassa… - Astronomy & …, 2023 - aanda.org
Pulsar timing arrays offer a probe of the low-frequency gravitational wave spectrum (1–100
nHz), which is intimately connected to a number of markers that can uniquely trace the …

The NANOGrav 15 yr data set: Detector characterization and noise budget

G Agazie, A Anumarlapudi, AM Archibald… - The Astrophysical …, 2023 - iopscience.iop.org
Pulsar timing arrays (PTAs) are galactic-scale gravitational wave (GW) detectors. Each
individual arm, composed of a millisecond pulsar, a radio telescope, and a kiloparsecs-long …

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 …

Probing the equation of state of the early Universe with pulsar timing arrays

L Liu, ZC Chen, QG Huang - Journal of Cosmology and …, 2023 - iopscience.iop.org
The recently released data by pulsar timing array (PTA) collaborations have amassed
substantial evidence corroborating the existence of a stochastic signal consistent with a …

Scalar induced gravitational waves in light of Pulsar Timing Array data

Z Yi, Q Gao, Y Gong, Y Wang, F Zhang - Science China Physics …, 2023 - Springer
The power-law parametrization for the energy density spectrum of gravitational wave (GW)
background is a useful tool to study its physics and origin. While scalar induced secondary …

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

J Antoniadis, P Arumugam, S Arumugam… - Astronomy & …, 2024 - aanda.org
We present the results of a search for continuous gravitational wave signals (CGWs) in the
second data release (DR2) of the European Pulsar Timing Array (EPTA) Collaboration. The …

Constraints on primordial curvature power spectrum with pulsar timing arrays

ZQ You, Z Yi, Y Wu - Journal of Cosmology and Astroparticle …, 2023 - iopscience.iop.org
The stochastic signal detected by NANOGrav, PPTA, EPTA, and CPTA can be explained by
the scalar-induced gravitational waves. In order to determine the scalar-induced …