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

  title={European Pulsar Timing Array Limits On An Isotropic Stochastic Gravitational-Wave Background},
  author={Lindley Lentati and Stephen R. Taylor and Chiara M. F. Mingarelli and Alberto Sesana and Sotiris Sanidas and Alberto Vecchio and R. N. Caballero and Kyoung Jin Lee and Rutger van Haasteren and Stanislav Babak and C. G. Bassa and Patrick Brem and Marta Burgay and David J. Champion and Ismael Cognard and Gregory Desvignes and Jonathan R. Gair and Lucas Guillemot and Jason W. T. Hessels and Gemma H. Janssen and Ramesh Karuppusamy and Michael Kramer and Antoine Lassus and Patrick Lazarus and Kuo Liu and Stefan Osłowski and Delphine Laure Gaelle Perrodin and A. Petiteau and Andrea Possenti and Mark B. Purver and P. A. Rosado and Roy J.M. Smits and Ben W. Stappers and Gilles Theureau and Caterina Tiburzi and Joris P W Verbiest},
  journal={Monthly Notices of the Royal Astronomical Society},
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… Expand
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