Searches for continuous gravitational waves from nine young supernova remnants

Document #:

LIGO-P1400182-v6

Document type:

P - Publications

Abstract:

We describe directed searches for continuous gravitational waves in data from the sixth LIGO science data run. The targets are nine young supernova remnants not associated with pulsars; eight of the remnants are associated with non-pulsing suspected neutron stars. One target's parameters were 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 $\mathcal{F}$-statistic. We found no credible gravitational-wave signals. We set 95\% confidence upper limits as strong (low) as $4\times10^{-25}$ on intrinsic strain, $2\times10^{-7}$ on fiducial ellipticity, and
$3\times10^{-6}$ 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.

Files in Document:

• 2015S6NineSNRs.pdf (4.6 MB)

Other Files:

• ul_h0.txt (138.7 kB)

Topics:

• Continuous Wave

Author Groups:

• LVC

Notes and Changes:

Updated following erratum

Related Documents:

Referenced by:

• LIGO-P2100062-v5: Erratum: "Searches for continuous gravitational waves from nine young supernova remnants" (2015, ApJ, 813, 39)

Journal References:

Published in ApJ vol. 813 pg. 39.

Publication Information:

Preprint at http://arxiv.org/abs/1412.5942
Science summary at http://www.ligo.org/science/Publication-S6DirectedSNR/index.php