All-sky search for periodic gravitational waves in the full S5 LIGO data

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dc.contributor.authorGanija, M.
dc.contributor.authorHosken, D.
dc.contributor.authorMunch, J.
dc.contributor.authorOttaway, D.
dc.contributor.authorVeitch, P.
dc.date.issued2012
dc.description.abstractWe report on an all-sky search for periodic gravitational waves in the frequency band 50–800 Hz and with the frequency time derivative in the range of 0 through -6×10-9  Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. After recent improvements in the search program that yielded a 10× increase in computational efficiency, we have searched in two years of data collected during LIGO’s fifth science run and have obtained the most sensitive all-sky upper limits on gravitational-wave strain to date. Near 150 Hz our upper limit on worst-case linearly polarized strain amplitude h0 is 1×10-24, while at the high end of our frequency range we achieve a worst-case upper limit of 3.8×10-24 for all polarizations and sky locations. These results constitute a factor of 2 improvement upon previously published data. A new detection pipeline utilizing a loosely coherent algorithm was able to follow up weaker outliers, increasing the volume of space where signals can be detected by a factor of 10, but has not revealed any gravitational-wave signals. The pipeline has been tested for robustness with respect to deviations from the model of an isolated neutron star, such as caused by a low-mass or long-period binary companion.
dc.description.statementofresponsibilityJ. Abadie... M. R. Ganija …D. J. Hosken... J. Munch... D. J. Ottaway... P. J. Veitch... et al., (LIGO Scientific Collaboration), (Virgo Collaboration)
dc.identifier.citationPhysical Review D: Particles, Fields, Gravitation and Cosmology, 2012; 85(2):022001-1-022001-19
dc.identifier.doi10.1103/PhysRevD.85.022001
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.orcidGanija, M. [0000-0002-6882-3930]
dc.identifier.orcidOttaway, D. [0000-0001-6794-1591]
dc.identifier.orcidVeitch, P. [0000-0002-2597-435X]
dc.identifier.urihttp://hdl.handle.net/2440/70839
dc.language.isoen
dc.publisherAmerican Physical Soc
dc.relation.grantARC
dc.rights© 2012 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevd.85.022001
dc.titleAll-sky search for periodic gravitational waves in the full S5 LIGO data
dc.typeJournal article
pubs.publication-statusPublished

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