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arXiv 0905.1654gr-qc
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在LIGO S4数据中寻找扰动黑洞的引力波振铃

Search for gravitational wave ringdowns from perturbed black holes in LIGO S4 data

The LIGO Scientific Collaboration, B. Abbott

摘要:

根据广义相对论,受扰动的黑洞将通过发射引力辐射而稳定下来。例如,在黑洞双星的合并过程中,在它们的螺旋运动和随后的合并之后,就会发生这样的扰动。在后期,波形是准正常模式的叠加,我们称之为振铃。主模预期为基模,l=m=2。由于这是一个众所周知的波形,可以使用LIGO数据实现匹配滤波来搜索该信号。我们提出了一个搜索引力波从黑洞ringdowns在第四LIGO科学运行S4,在此期间,LIGO是敏感的扰动黑洞的主导模式的质量范围为10 Msun到500 Msun,制度的中等质量的黑洞,距离高达300 Mpc。我们提出了一个搜索的引力波从黑洞环使用的数据从S4。没有发现引力波候选者;假设源的均匀分布,我们对局部宇宙中质量在85兆太阳至390兆太阳之间的黑洞的衰荡速率设定了一个90%置信度的上限,即3.2 x 10^{-5}年^{-1}兆秒差距^{-3} = 1.6 x 10^{-3}年^{-1} L_{10} ^{-1},其中L_{10}是太阳蓝光光度的10^{10}倍。

英文摘要:

According to general relativity a perturbed black hole will settle to a stationary configuration by the emission of gravitational radiation. Such a perturbation will occur, for example, in the coalescence of a black hole binary, following their inspiral and subsequent merger. At late times the waveform is a superposition of quasi-normal modes, which we refer to as the ringdown. The dominant mode is expected to be the fundamental mode, l=m=2. Since this is a well-known waveform, matched filtering can be implemented to search for this signal using LIGO data. We present a search for gravitational waves from black hole ringdowns in the fourth LIGO science run S4, during which LIGO was sensitive to the dominant mode of perturbed black holes with masses in the range of 10 Msun to 500 Msun, the regime of intermediate-mass black holes, to distances up to 300 Mpc. We present a search for gravitational waves from black hole ringdowns using data from S4. No gravitational wave candidates were found; we place a 90%-confidence upper limit on the rate of ringdowns from black holes with mass between 85 Msun and 390 Msun in the local universe, assuming a uniform distribution of sources, of 3.2 x 10^{-5} yr^{-1} Mpc^{-3} = 1.6 x 10^{-3}yr^{-1} L_{10}^{-1}, where L_{10} is 10^{10} times the solar blue-light luminosity.

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