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# Searches for continuous gravitational waves from nine young supernova remnants

Aasi, J., Abbott, B.P. and Abbott, R. et al. , LIGO Scientific Collaboration and the Virgo Collaboration (2015) Searches for continuous gravitational waves from nine young supernova remnants. The Astrophysical Journal, 813 (1), 1-16.

Record type: Article

## 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 ${\mathcal{F}}$-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.

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Accepted/In Press date: 18 September 2015
Published date: 27 October 2015
Organisations: Applied Mathematics

## Identifiers

Local EPrints ID: 404337
URI: http://eprints.soton.ac.uk/id/eprint/404337
ISSN: 0004-637X
PURE UUID: 44231ec2-a8f7-4795-a26d-0995cb0cd3fd
ORCID for D. I. Jones: orcid.org/0000-0002-0117-7567

## Catalogue record

Date deposited: 06 Jan 2017 09:45

## Contributors

Author: J. Aasi
Author: B.P. Abbott
Author: R. Abbott
Author: D. I. Jones