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|Title:||Searches for continuous gravitational waves from nine young supernova remnants|
|Citation:||The Astrophysical Journal, 2015; 813(1):39-1-39-16|
|Publisher:||IOP PUBLISHING LTD|
|J. Aasi ... S. E. Hollitt ... D. J. Hosken ... E. J. King ... J. Munch ... D. J. Ottaway ... P. J. Veitch ... et.al.|
|Abstract:||We describe directed searches for continuous gravitational waves (GWs) in data from the sixth Laser Interferometer Gravitational-wave Observatory (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 10. 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 ƒ-statistic. We found no evidence of GW 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‾⁵on 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|
|Keywords:||gravitational waves; ISM: supernova remnants; stars: neutron|
|Rights:||© 2015. The American Astronomical Society. All rights reserved|
|Appears in Collections:||IPAS publications|
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