The characterization of Virgo data and its impact on gravitational-wave searches
The characterization of Virgo data and its impact on gravitational-wave searches
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DOI：
10.1088/0264-9381/29/15/155002
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发表时间：
2012-08-07
影响因子：
3.5
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Aasi, J.;Abadie, J.;Zweizig, J.
在2007年至2010年期间，Virgo收集了与LIGO和GEO引力波（GW）探测器一致的数据。这些数据已被搜索的GWs发出的灾难性的现象在宇宙中，由非轴对称旋转中子星或从一个随机的背景中的频带的探测器。GW搜索的灵敏度受到检测器或其环境产生的噪声的限制。因此，在GW检测器中表征各种噪声源至关重要。本文回顾了处女座探测器的噪声源，噪声传播，并在三个第一处女座观测运行中确定的转换机制。在许多情况下，这些调查使我们能够减轻检测器中的噪声源，或者选择性地标记噪声事件并将其从数据中丢弃。我们提出的例子，从联合LIGO-GEO-室女座GW的搜索，以显示如何以及噪声瞬态和窄谱线已被确定和排除在室女座的数据。我们还讨论了如何探测器表征可以提高GW搜索的天体物理范围。
Between 2007 and 2010 Virgo collected data in coincidence with the LIGO and GEO gravitational-wave (GW) detectors. These data have been searched for GWs emitted by cataclysmic phenomena in the universe, by non-axisymmetric rotating neutron stars or from a stochastic background in the frequency band of the detectors. The sensitivity of GW searches is limited by noise produced by the detector or its environment. It is therefore crucial to characterize the various noise sources in a GW detector. This paper reviews the Virgo detector noise sources, noise propagation, and conversion mechanisms which were identified in the three first Virgo observing runs. In many cases, these investigations allowed us to mitigate noise sources in the detector, or to selectively flag noise events and discard them from the data. We present examples from the joint LIGO-GEO-Virgo GW searches to show how well noise transients and narrow spectral lines have been identified and excluded from the Virgo data. We also discuss how detector characterization can improve the astrophysical reach of GW searches.