Searches for continuous gravitational waves from nine young supernova remnants

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 targetʼs 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 F-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 × 10−5 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.

Bibliographic Details

Main Authors:	Aasi, J., Abbott, P., Abbott, R., Abbott, T., Abernathy, M. R., Acernese, F., Domínguez, Alfredo Eduardo, Maglione, César Germán, Ortega Larcher, Walter Emanuel, Quiroga, Gonzalo Damián, Reula, Oscar Alejandro
Format:	article biblioteca
Language:	eng
Published:	2015
Subjects:	Gravitational waves, Supernova remnants, Neutron star,
Online Access:	http://hdl.handle.net/11086/29050 http://dx.doi.org/10.1088/0004-637X/813/1/39
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