All-sky search for long-duration gravitational wave transients with initial LIGO
All-sky search for long-duration gravitational wave transients with initial LIGO
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DOI：
10.1103/physrevd.93.042005
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发表时间：
2016-02-12
影响因子：
5
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Abbott, B. P.;Abbott, R.;Zweizig, J.
我们提出了一个搜索的结果，在两组数据收集的LIGO汉福德和LIGO利文斯顿探测器在2005年11月5日和2007年9月30日，和2009年7月7日和2010年10月20日，总观测时间分别为283.0天和132.9天的引力波瞬变。搜索的目标是在40-1000 Hz的频带内持续10-500 s的引力波瞬变，对信号波形、极化、源方向或发生时间的假设最少。所有候选触发器都与预期的背景一致;因此，我们为不同类型的引力波信号的长时间引力波瞬变速率设置了90%的置信上限。对于来自黑洞吸积盘不稳定性的信号，我们在90%置信度下将源速率密度的上限设定在3.4 x 10（-5）和9.4 x 10（-4）Mpc（-3）yr（-1）之间。这是对未建模的长时间瞬态引力波进行全天搜索的第一个结果。
We present the results of a search for long-duration gravitational wave transients in two sets of data collected by the LIGO Hanford and LIGO Livingston detectors between November 5, 2005 and September 30, 2007, and July 7, 2009 and October 20, 2010, with a total observational time of 283.0 days and 132.9 days, respectively. The search targets gravitational wave transients of duration 10-500 s in a frequency band of 40-1000 Hz, with minimal assumptions about the signal waveform, polarization, source direction, or time of occurrence. All candidate triggers were consistent with the expected background; as a result we set 90% confidence upper limits on the rate of long-duration gravitational wave transients for different types of gravitational wave signals. For signals from black hole accretion disk instabilities, we set upper limits on the source rate density between 3.4 x 10(-5) and 9.4 x 10(-4) Mpc(-3) yr(-1) at 90% confidence. These are the first results from an all-sky search for unmodeled long-duration transient gravitational waves.