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Article
Search for Gravitational Wave Bursts from Six Magnetars
Astrophysical Journal Letters
  • J. Abadie, California Institute of Technology
  • B. P. Abbott, California Institute of Technology
  • R. Abbott, California Institute of Technology
  • M. Abernathy, University of Glasgow
  • T. Accadia, Université Savoie Mont Blanc
  • F. Acernese, Università degli Studi di Napoli Federico II
  • C. Adams, LIGO Livingston
  • R. Adhikari, California Institute of Technology
  • C. Affeldt, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
  • B. Allen, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
  • G. S. Allen, Stanford University
  • E. Amador Ceron, University of Wisconsin-Milwaukee
  • D. Amariutei, University of Florida
  • R. S. Amin, Louisiana State University
  • S. B. Anderson, California Institute of Technology
  • W. G. Anderson, University of Wisconsin-Milwaukee
  • F. Antonucci, Istituto Nazionale di Fisica Nucleare - INFN
  • K. Arai, California Institute of Technology
  • M. A. Arain, University of Florida
  • M. C. Araya, California Institute of Technology
  • S. M. Aston, University of Birmingham
  • P. Astone, Istituto Nazionale di Fisica Nucleare - INFN
  • D. Atkinson, LIGO Hanford
  • P. Aufmuth, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
  • C. Aulbert, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
  • B. E. Aylott, University of Birmingham
  • S. Babak, Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
  • P. Baker, Montana State University
  • G. Ballardin, European Gravitational Observatory (EGO)
  • S. Ballmer, California Institute of Technology
  • D. Barker, LIGO Hanford
  • Tiffany Z. Summerscales, Andrews University
Document Type
Article
Publication Date
6-20-2011
Keywords
  • gravitational waves,
  • stars: magnetars
Abstract

Soft gamma repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are thought to be magnetars: neutron stars powered by extreme magnetic fields. These rare objects are characterized by repeated and sometimes spectacular gamma-ray bursts. The burst mechanism might involve crustal fractures and excitation of non-radial modes which would emit gravitational waves (GWs). We present the results of a search for GW bursts from six galactic magnetars that is sensitive to neutron star f-modes, thought to be the most efficient GW emitting oscillatory modes in compact stars. One of them, SGR 0501+4516, is likely 1kpc from Earth, an order of magnitude closer than magnetars targeted in previous GW searches. A second, AXP 1E 1547.0-5408, gave a burst with an estimated isotropic energy >1044erg which is comparable to the giant flares. We find no evidence of GWs associated with a sample of 1279 electromagnetic triggers from six magnetars occurring between 2006 November and 2009 June, in GW data from the LIGO, Virgo, and GEO600 detectors. Our lowest model-dependent GW emission energy upper limits for band- and time-limited white noise bursts in the detector sensitive band, and for f-mode ringdowns (at 1090Hz), are 3.0 × 1044 d 21erg and 1.4 × 10 47 d 21erg, respectively, where and d 0501 is the distance to SGR 0501+4516. These limits on GW emission from f-modes are an order of magnitude lower than any previous, and approach the range of electromagnetic energies seen in SGR giant flares for the first time. © 2011. The American Astronomical Society. All rights reserved.

DOI
https://doi.org/10.1088/2041-8205/734/2/L35
First Department
Physics
Acknowledgements
Retrieved January 29, 2021 from https://iopscience.iop.org/article/10.1088/2041-8205/734/2/L35/pdf
Citation Information
J. Abadie, B. P. Abbott, R. Abbott, M. Abernathy, et al.. "Search for Gravitational Wave Bursts from Six Magnetars" Astrophysical Journal Letters Vol. 734 Iss. 2 PART 2 (2011)
Available at: http://works.bepress.com/tiffany_summerscales/191/