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Oxford University Press, Monthly Notices of the Royal Astronomical Society, 3(453), p. 2577-2599, 2015

DOI: 10.1093/mnras/stv1538

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European Pulsar Timing Array Limits On An Isotropic Stochastic Gravitational-Wave Background

Journal article published in 2015 by Lindley Lentati, Stephen R. Taylor, Chiara M. F. Mingarelli, Alberto Sesana, Sotiris A. Sanidas, Alberto Vecchio, R. Nicolas Caballero, R. Nicolas Caballero, K. J. Lee, Rutger van Haasteren, Stanislav Babak, Cees G. Bassa, Patrick Brem, Marta Burgay, David J. Champion and other authors.
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This paper is available in a repository.

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Abstract

24 pages, 5 tables, 17 figures ; International audience ; We present new limits on an isotropic stochastic gravitational-wave background (GWB) using a six pulsar dataset spanning 18 yr of observations from the 2015 European Pulsar Timing Array data release. Performing a Bayesian analysis, we fit simultaneously for the intrinsic noise parameters for each pulsar, along with common correlated signals including clock, and Solar System ephemeris errors, obtaining a robust 95$\%$ upper limit on the dimensionless strain amplitude $A$ of the background of $A