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Efficient Gravitational Wave Searches with Pulsar Timing Arrays using Hamiltonian Monte Carlo
Gabriel E. Freedman, Aaron D. Johnson, Rutger van Haasteren +1
Pulsar timing arrays (PTAs) detect low-frequency gravitational waves (GWs) by looking for correlated deviations in pulse arrival times. Current Bayesian searches use Markov Chain M…
An unusual pulse shape change event in PSR J1713+0747 observed with the Green Bank Telescope and CHIME
Ross J. Jennings, James M. Cordes, Shami Chatterjee +41
The millisecond pulsar J1713+0747 underwent a sudden and significant pulse shape change between April 16 and 17, 2021 (MJDs 59320 and 59321). Subsequently, the pulse shape graduall…
Disentangling Multiple Stochastic Gravitational Wave Background Sources in PTA Datasets
Andrew R. Kaiser, Nihan S. Pol, Maura A. McLaughlin +7
With strong evidence of a common-spectrum stochastic process in the most recent datasets from the NANOGrav Collaboration, the European Pulsar Timing Array (PTA), Parkes PTA, and th…
The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background
J. Antoniadis, Z. Arzoumanian, S. Babak +123
We searched for an isotropic stochastic gravitational wave background in the second data release of the International Pulsar Timing Array, a global collaboration synthesizing decad…
Gravitational Wave Statistics for Pulsar Timing Arrays: Examining Bias from Using a Finite Number of Pulsars
Aaron D. Johnson, Sarah J. Vigeland, Xavier Siemens +1
Recently, many different pulsar timing array (PTA) collaborations have reported strong evidence for a common stochastic process in their data sets. The reported amplitudes are in t…