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arXiv 1302.5628gr-qcastro-ph.IM
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在LISA频带中减去温度引起的相位噪声

Subtraction of temperature induced phase noise in the LISA frequency band

M. Nofrarias, F. Gibert, N. Karnesis, A. F. Garcia, M. Hewitson, G. Heinzel, K. Danzmann

摘要:

温度波动是影响引力波探测器在甚低频范围探测的主要限制因素之一。在这里,我们报告的特点,这种噪声源在LISA探路者光具座,并提出了一种方法,以消除其贡献的数据。我们的研究结果表明,温度波动确实限制了我们的测量低于1毫赫兹,并且它们的减法导致LISA测量频带10^{-4} Hz低端的噪声水平降低了5.6倍(15 dB),在更低的频率下增加到20.2倍(26 dB),即,1.5x10^{-5} Hz。本文提出的方法可应用于一般情况下用多个传感器消除噪声源的引力波探测器中其它噪声源的扣除。

英文摘要:

Temperature fluctuations are expected to be one of the limiting factors for gravitational wave detectors in the very low frequency range. Here we report the characterisation of this noise source in the LISA Pathfinder optical bench and propose a method to remove its contribution from the data. Our results show that temperature fluctuations are indeed limiting our measurement below one millihertz, and that their subtraction leads to a factor 5.6 (15 dB) reduction in the noise level at the lower end of the LISA measurement band 10^{-4} Hz, which increases to 20.2 (26 dB) at even lower frequencies, i.e., 1.5x10^{-5} Hz. The method presented here can be applied to the subtraction of other noise sources in gravitational wave detectors in the general situation where multiple sensors are used to characterise the noise source.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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