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Search for Gravitational Waves from Galactic and Extra-Galactic Binary Neutron Stars

Abbott, B., Babak, Stanislav, Balasubramanian, Ramachandran, Churches, David K., Fairhurst, Stephen ORCID:, Cokelaer, Thomas, Messaritaki, Eirini ORCID:, Regimbau, Tania, Romano, Joseph David, Sathyaprakash, Bangalore Suryanarayana ORCID:, Schutz, Bernard Frederick ORCID:, Sutton, Patrick J ORCID: and Taylor, I. 2005. Search for Gravitational Waves from Galactic and Extra-Galactic Binary Neutron Stars. Physical Review D - Particles, Fields, Gravitation and Cosmology 72 (8) , 082001. 10.1103/PhysRevD.72.082001

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We use 373 hours (≈15 days) of data from the second science run of the LIGO gravitational-wave detectors to search for signals from binary neutron star coalescences within a maximum distance of about 1.5 Mpc, a volume of space which includes the Andromeda Galaxy and other galaxies of the Local Group of galaxies. This analysis requires a signal to be found in data from detectors at the two LIGO sites, according to a set of coincidence criteria. The background (accidental coincidence rate) is determined from the data and is used to judge the significance of event candidates. No inspiral gravitational-wave events were identified in our search. Using a population model which includes the Local Group, we establish an upper limit of less than 47 inspiral events per year per Milky Way equivalent galaxy with 90% confidence for nonspinning binary neutron star systems with component masses between 1 and 3M⊙.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Physical Society
ISSN: 0556-2821
Last Modified: 11 Oct 2023 17:44

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