Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: inferences in the stochastic gravitational-wave background search

S. Chen,R. N. Caballero,Y. J. Guo,A. Chalumeau,K. Liu,G. Shaifullah,K. J. Lee,S. Babak,G. Desvignes,A. Parthasarathy,H. Hu,E. van der Wateren,J. Antoniadis,A. -S. Bak Nielsen,C. G. Bassa,A. Berthereau,M. Burgay,D. J. Champion,I. Cognard, M. Falxa,R. D. Ferdman,P. C. C. Freire,J. R. Gair, E. Graikou,L. Guillemot,J. Jang,G. H. Janssen,R. Karuppusamy,M. J. Keith,M. Kramer, X. J. Liu,A. G. Lyne,R. A. Main,J. W. McKee, M. B. Mickaliger,B. B. P. Perera,D. Perrodin, A. Petiteau, N. K. Porayko, A. Possenti,A. Samajdar, S. A. Sanidas,A. Sesana,L. Speri,B. W. Stappers,G. Theureau,C. Tiburzi,A. Vecchio,J. P. W. Verbiest,J. Wang,L. Wang, H. Xu

Monthly Notices of the Royal Astronomical Society（2021）

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摘要

We present results from the search for a stochastic gravitational-wave background (GWB) as predicted by the theory of General Relativity using six radio millisecond pulsars from the Data Release 2 (DR2) of the European Pulsar Timing Array (EPTA) covering a timespan up to 24 yr. A GWB manifests itself as a long-term low-frequency stochastic signal common to all pulsars, a common red signal (CRS), w...

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关键词

gravitational waves,methods: data analysis,pulsars: general

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