Constraints on Cosmic Strings from the LIGO-Virgo Gravitational-Wave Detectors

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dc.contributor.author Sengupta, Anand
dc.date.accessioned 2014-06-26T07:41:06Z
dc.date.available 2014-06-26T07:41:06Z
dc.date.issued 2014-04
dc.identifier.citation Sengupta, Anand et al., "Constraints on Cosmic Strings from the LIGO-Virgo Gravitational-Wave Detectors", Physical Review Letters, DOI: 10.1103/PhysRevLett.112.131101, vol. 112, no. 13, Apr. 2014. en_US
dc.identifier.issn 0031-9007
dc.identifier.uri http://dx.doi.org/10.1103/PhysRevLett.112.131101
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1335
dc.description.abstract Cosmic strings can give rise to a large variety of interesting astrophysical phenomena. Among them, powerful bursts of gravitational waves (GWs) produced by cusps are a promising observational signature. In this Letter we present a search for GWs from cosmic string cusps in data collected by the LIGO and Virgo gravitational wave detectors between 2005 and 2010, with over 625 days of live time. We find no evidence of GW signals from cosmic strings. From this result, we derive new constraints on cosmic string parameters, which complement and improve existing limits from previous searches for a stochastic background of GWs from cosmic microwave background measurements and pulsar timing data. In particular, if the size of loops is given by the gravitational backreaction scale, we place upper limits on the string tension Gμ below 10−8 in some regions of the cosmic string parameter space. en_US
dc.description.statementofresponsibility by Anand Sengupta et al.,
dc.format.extent vol. 112, no. 13
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject Astrophysical phenomena en_US
dc.subject Back reaction en_US
dc.subject Cosmic microwave backgrounds en_US
dc.subject Cosmic strings en_US
dc.subject Gravitational wave detectors en_US
dc.subject Parameter spaces en_US
dc.subject String tension en_US
dc.subject Upper limit en_US
dc.title Constraints on Cosmic Strings from the LIGO-Virgo Gravitational-Wave Detectors en_US
dc.type Article en_US
dc.relation.journal Physical Review Letters


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