Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/74814
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Type: Journal article
Title: Implications for the origin Of GRB 051103 from LIGO observations
Author: Hosken, D.
Munch, J.
Ottaway, D.
Veitch, P.
Citation: Astrophysical Journal, 2012; 755(1):1-8
Publisher: Univ Chicago Press
Issue Date: 2012
ISSN: 0004-637X
1538-4357
Statement of
Responsibility: 
J. Abadie... J. Hosken... J. Munch... D. J. Ottaway... P. J. Veitch... et al.
Abstract: We present the results of a LIGO search for gravitational waves (GWs) associated with GRB 051103, a shortduration hard-spectrum gamma-ray burst (GRB) whose electromagnetically determined sky position is coincident with the spiral galaxy M81, which is 3.6 Mpc from Earth. Possible progenitors for short-hard GRBs include compact object mergers and soft gamma repeater (SGR) giant flares. A merger progenitor would produce a characteristic GW signal that should be detectable at a distance of M81, while GW emission from an SGR is not expected to be detectable at that distance. We found no evidence of a GW signal associated with GRB 051103. Assuming weakly beamed γ -ray emission with a jet semi-angle of 30◦, we exclude a binary neutron star merger in M81 as the progenitor with a confidence of 98%. Neutron star–black hole mergers are excluded with >99% confidence. If the event occurred in M81, then our findings support the hypothesis that GRB 051103 was due to an SGR giant flare, making it one of the most distant extragalactic magnetars observed to date.
Keywords: gamma-ray burst; individual (GRB 051103) – gravitational waves – stars; gravitational waves; stars: magnetars
Rights: © 2012. The American Astronomical Society. All rights reserved.
RMID: 0020121268
DOI: 10.1088/0004-637X/755/1/2
Appears in Collections:Physics publications
IPAS publications
Environment Institute publications

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