Searches for continuous gravitational waves from nine young supernova remnants

Abstract : We describe directed searches for continuous gravitational waves in data from the sixth LIGO science data run. The targets were nine young supernova remnants not associated with pulsars; eight of the remnants are associated with non-pulsing suspected neutron stars. One target's parameters are uncertain enough to warrant two searches, for a total of ten. Each search covered a broad band of frequencies and first and second frequency derivatives for a fixed sky direction. The searches coherently integrated data from the two LIGO interferometers over time spans from 5.3-25.3 days using the matched-filtering F-statistic. We found no credible gravitational-wave signals. We set 95% confidence upper limits as strong (low) as 4×10−25 on intrinsic strain, 2×10−7 on fiducial ellipticity, and 4×10−5 on r-mode amplitude. These beat the indirect limits from energy conservation and are within the range of theoretical predictions for neutron-star ellipticities and r-mode amplitudes.
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Astrophysical Journal, American Astronomical Society, 2015, 813, pp.39. 〈10.1088/0004-637X/813/1/39〉
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Contributeur : Sabine Starita <>
Soumis le : mardi 6 janvier 2015 - 16:38:50
Dernière modification le : lundi 16 juillet 2018 - 16:06:12

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J. Aasi, M.-A. Bizouard, V. Brisson, F. Cavalier, M. Davier, et al.. Searches for continuous gravitational waves from nine young supernova remnants. Astrophysical Journal, American Astronomical Society, 2015, 813, pp.39. 〈10.1088/0004-637X/813/1/39〉. 〈in2p3-01100590〉

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