Search for gravitational radiation from intermediate mass black hole binaries in data from the second LIGO-Virgo joint science run
Search for gravitational radiation from intermediate mass black hole binaries in data from the second LIGO-Virgo joint science run
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DOI：
10.1103/physrevd.89.122003
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发表时间：
2014-06-12
影响因子：
5
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Aasi, J.;Abbott, B. P.;Zweizig, J.
本文报道了一个未建模的，全天空搜索引力波合并中等质量黑洞双星（IMBHB）。该搜索是在LIGO和Virgo探测器第二次联合科学运行（2009年7月至2010年10月）的数据上进行的，并且对IMBHB敏感，其范围接近200 Mpc，平均可能的天空位置和双星相对于视线的倾斜度。没有显着的candidate. Upper限制的非自旋IMBHB与100和450之间的总质量的M-circle点和质量比在0.25和1之间的聚结率密度放置通过结合这个分析与类似的搜索进行的数据从第一个LIGO处女座联合科学运行（2005年11月至2007年10月）。最严格的极限是由两个88 M圆点黑洞组成的系统，在90%的置信水平下等于0.12 Mpc（-3）Myr（-1）。本文还介绍了对IMBHB自旋配置搜索范围影响的第一次估计，对于未建模分析的情况：对于自旋与双星的轨道角动量对准并且均匀分布在无量纲自旋参数高达0.8的IMBHB群，具有非自旋组件的IMBHB的可见体积大约是两倍，而具有反对准自旋的类似群体将可见体积减小了约20%。
This paper reports on an unmodeled, all-sky search for gravitational waves from merging intermediate mass black hole binaries (IMBHB). The search was performed on data from the second joint science run of the LIGO and Virgo detectors (July 2009-October 2010) and was sensitive to IMBHBs with a range up to similar to 200 Mpc, averaged over the possible sky positions and inclinations of the binaries with respect to the line of sight. No significant candidate was found. Upper limits on the coalescence-rate density of nonspinning IMBHBs with total masses between 100 and 450 M-circle dot and mass ratios between 0.25 and 1 were placed by combining this analysis with an analogous search performed on data from the first LIGO-Virgo joint science run (November 2005-October 2007). The most stringent limit was set for systems consisting of two 88 M-circle dot black holes and is equal to 0.12 Mpc(-3) Myr(-1) at the 90% confidence level. This paper also presents the first estimate, for the case of an unmodeled analysis, of the impact on the search range of IMBHB spin configurations: the visible volume for IMBHBs with nonspinning components is roughly doubled for a population of IMBHBs with spins aligned with the binary's orbital angular momentum and uniformly distributed in the dimensionless spin parameter up to 0.8, whereas an analogous population with antialigned spins decreases the visible volume by similar to 20%.