Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run

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dc.contributor.author Sengupta, Anand
dc.date.accessioned 2014-06-26T07:24:56Z
dc.date.available 2014-06-26T07:24:56Z
dc.date.issued 2014-04
dc.identifier.citation Sengupta, Anand et al., "Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run ", Classical and Quantum Gravity, DOI: 10.1088/0264-9381/31/8/085014, vol. 31, no. 8, Apr. 2014. en_US
dc.identifier.issn 0264-9381
dc.identifier.uri http://dx.doi.org/10.1088/0264-9381/31/8/085014
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1333
dc.description.abstract We report on an all-sky search for periodic gravitational waves in the frequency range 50–1000 Hz with the first derivative of frequency in the range −8.9 × 10−10 Hz s−1 to zero in two years of data collected during LIGO's fifth science run. Our results employ a Hough transform technique, introducing a χ2 test and analysis of coincidences between the signal levels in years 1 and 2 of observations that offers a significant improvement in the product of strain sensitivity with compute cycles per data sample compared to previously published searches. Since our search yields no surviving candidates, we present results taking the form of frequency dependent, 95% confidence upper limits on the strain amplitude h0. The most stringent upper limit from year 1 is 1.0 × 10−24 in the 158.00–158.25 Hz band. In year 2, the most stringent upper limit is 8.9 × 10−25 in the 146.50–146.75 Hz band. This improved detection pipeline, which is computationally efficient by at least two orders of magnitude better than our flagship Einstein@Home search, will be important for 'quick-look' searches in the Advanced LIGO and Virgo detector era. en_US
dc.description.statementofresponsibility by Anand Sengupta et al.,
dc.format.extent vol. 31, no. 8
dc.language.iso en en_US
dc.publisher IOP Science en_US
dc.subject Gravitational waves en_US
dc.subject LIGO/neutron stars en_US
dc.title Application of a Hough search for continuous gravitational waves on data from the fifth LIGO science run en_US
dc.type Article en_US
dc.relation.journal Classical and Quantum Gravity


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