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Search for gravitational wave inspiral signals associated with short gamma-ray bursts during ligo's fifth and virgo's first science run

Lockerbie, N.A. (2010) Search for gravitational wave inspiral signals associated with short gamma-ray bursts during ligo's fifth and virgo's first science run. Astrophysical Journal, 715 (2). pp. 1453-1461. ISSN 0004-637X

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Abstract

Progenitor scenarios for short gamma-ray bursts (short GRBs) include coalescenses of two neutron stars or a neutron star and black hole, which would necessarily be accompanied by the emission of strong gravitational waves. We present a search for these known gravitational-wave signatures in temporal and directional coincidence with 22 GRBs that had sufficient gravitational-wave data available in multiple instruments during LIGO's fifth science run, S5, and Virgo's first science run, VSR1. We find no statistically significant gravitational-wave candidates within a [ - 5, + 1) s window around the trigger time of any GRB. Using the Wilcoxon-Mann-Whitney U-test, we find no evidence for an excess of weak gravitational-wave signals in our sample of GRBs. We exclude neutron star-black hole progenitors to a median 90% confidence exclusion distance of 6.7 Mpc.