Searches For Continuous Gravitational Waves From Nine Young Supernova Remnants

J. Aasi*, B.P. Abbott, R. Abbott, T. Abbott, M.R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R.X. Adhikari, V. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O.D. Aguiar, A. Ain, P. Ajith, A. AlemicB. Allen, A. Allocca, D. Amariutei, S.B. Anderson, W.G. Anderson, K. Arai, M.C. Araya, C. Arceneaux, J.S. Areeda, S. Ast, S.M. Aston, P. Astone, P. Aufmuth, C. Aulbert, B.E. Aylott, S. Babak, P.T. Baker, F. Baldaccini, G. Ballardin, S.W. Ballmer, J.C. Barayoga, M. Barbet, S. Barclay, B.C. Barish, D. Barker, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, J. Bartlett, S.L. Danilishin, S. Hild, J. Steinlechner, S. Steinlechner, J.F.J. Van den Brand

*Corresponding author for this work

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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. -statistic. We found no evidence of GW signals. We set 95% confidence upper limits as strong (low) as 4 x 10(-25) on intrinsic strain, 2 x 10(-7) on fiducial ellipticity, and 4 x 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.
Original languageEnglish
Article number39
Number of pages16
JournalAstrophysical Journal
Volume813
Issue number1
DOIs
Publication statusPublished - 1 Nov 2015
Externally publishedYes

Keywords

  • gravitational waves
  • ISM: supernova remnants
  • stars: neutron
  • SPIN-DOWN LIMIT
  • X-RAY SOURCE
  • RX J1713.7-3946
  • EMISSION
  • RADIATION
  • G350.1-0.3
  • EXPANSION
  • NEBULA
  • PULSAR

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