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The International Pulsar Timing Array checklist for the detection of nanohertz gravitational waves
Bruce Allen, Sanjeev Dhurandhar, Yashwant Gupta +5
Pulsar timing arrays (PTAs) provide a way to detect gravitational waves at nanohertz frequencies. In this band, the most likely signals are stochastic, with a power spectrum that r…
Sensors and Actuators for the Advanced LIGO+ Upgrade
S J Cooper, C M Mow-Lowry, D Hoyland +6
As part of the Advanced LIGO+ (A+) project we have developed, produced, and characterised sensors and electronics to interrogate new optical suspensions. The central element is a d…
ETpathfinder: a cryogenic testbed for interferometric gravitational-wave detectors
A. Utina, A. Amato, J. Arends +112
The third-generation of gravitational wave observatories, such as the Einstein Telescope (ET) and Cosmic Explorer (CE), aim for an improvement in sensitivity of at least a factor o…
Improving astrophysical parameter estimation via offline noise subtraction for Advanced LIGO
J. C. Driggers, S. Vitale, A. P. Lundgren +228
The Advanced LIGO detectors have recently completed their second observation run successfully. The run lasted for approximately 10 months and lead to multiple new discoveries. The…
Dirichlet Process Gaussian-mixture model: An application to localizing coalescing binary neutron stars with gravitational-wave observations
Walter Del Pozzo, Christopher Berry, Archisman Ghosh +3
We reconstruct posterior distributions for the position (sky area and distance) of a simulated set of binary neutron-star gravitational-waves signals observed with Advanced LIGO an…
Null stream analysis of Pulsar Timing Array data: localisation of resolvable gravitational wave sources
Janna Goldstein, John Veitch, Alberto Sesana +1
Super-massive black hole binaries are expected to produce a GW signal in the nano-Hertz frequency band which may be detected by PTAs in the coming years. The signal is composed of…
All correlations must die: Assessing the significance of a stochastic gravitational-wave background in pulsar-timing arrays
S. R. Taylor, L. Lentati, S. Babak +4
We present two methods for determining the significance of a stochastic gravitational-wave (GW) background affecting a pulsar-timing array, where detection is based on evidence for…
The International Pulsar Timing Array: First Data Release
J. P. W. Verbiest, L. Lentati, G. Hobbs +89
The highly stable spin of neutron stars can be exploited for a variety of (astro-)physical investigations. In particular arrays of pulsars with rotational periods of the order of m…
The noise properties of 42 millisecond pulsars from the European Pulsar Timing Array and their impact on gravitational wave searches
R. N. Caballero, K. J. Lee, L. Lentati +36
The sensitivity of Pulsar Timing Arrays to gravitational waves depends on the noise present in the individual pulsar timing data. Noise may be either intrinsic or extrinsic to the…
Analysis of the first IPTA Mock Data Challenge by the EPTA timing data analysis working group
Rutger van Haasteren, Chiara M. F. Mingarelli, Alberto Vecchio +1
This is a summary of the methods we used to analyse the first IPTA Mock Data Challenge (MDC), and the obtained results. We have used a Bayesian analysis in the time domain, acceler…