SEARCH FOR GRAVITATIONAL-WAVE INSPIRAL SIGNALS ASSOCIATED WITH SHORT GAMMA-RAY BURSTS DURING LIGO'S FIFTH AND VIRGO'S FIRST SCIENCE RUN

SEARCH FOR GRAVITATIONAL-WAVE INSPIRAL SIGNALS ASSOCIATED WITH SHORT GAMMA-RAY BURSTS DURING LIGO'S FIFTH AND VIRGO'S FIRST SCIENCE RUN
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搜索与 LIGO 第五次和 Virgo 第一次科学运行期间短伽马射线爆发相关的引力波吸气信号

DOI:
10.1088/0004-637x/715/2/1453
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发表时间:
2010
期刊:
The Astrophysical Journal
影响因子:
--
通讯作者:
Abadie J
Abadie J
中科院分区:
--
文献类型:
--
作者:
Abadie J

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短伽马射线暴(短伽马射线暴)的前身场景包括两颗中子星或一颗中子星和黑洞的合并,这必然伴随着强引力波的发射。在LIGO的第五次科学运行S5和处女座的第一次科学运行VSR1期间,我们对22个伽玛暴进行了时间和方向上的重合搜索,这些已知的引力波特征在多台仪器上有足够的引力波数据可用。在任一伽玛暴的触发时间附近,我们没有在[−5,+1)S窗内发现有统计意义的引力波候选者。使用Wilcoxon-Mann-Whitney U检验,我们没有发现在我们的伽玛暴样本中有过多弱引力波信号的证据。我们排除了中子星-黑洞前体,中位数90%的置信度排除距离为6.7Mpc。
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.
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