GW150914: The Advanced LIGO Detectors in the Era of First Discoveries
GW150914: The Advanced LIGO Detectors in the Era of First Discoveries
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DOI：
10.1103/physrevlett.116.131103
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发表时间：
2016-03-31
影响因子：
8.6
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Abbott, B. P.;Abbott, R.;Zweizig, J.
经过重大升级，激光干涉引力波天文台（LIGO）的两台先进探测器于2015年9月至2016年1月进行了首次观测。在100 Hz时应变灵敏度达到10（-23）/根Hz，在重合观测的前16天内，可观测体积和测量时间的乘积超过了以往所有观测。 2015 年 9 月 14 日，高级 LIGO 探测器观测到瞬态引力波信号，该信号被确定为两个黑洞的合并 [B. P. Abbott 等人，物理学。莱特牧师。 116, 061102 (2016)]，开启引力波天文学时代。两个探测器同时观测到的事件 GW150914 的组合信噪比为 24。在这里，我们介绍了实现这一观察的探测器的主要特征。在全灵敏度下，高级 LIGO 探测器旨在将质量与 GW150914 类似的双黑洞系统的信噪比再提高 3 倍。
Following a major upgrade, the two advanced detectors of the Laser Interferometer Gravitational-wave Observatory (LIGO) held their first observation run between September 2015 and January 2016. With a strain sensitivity of 10(-23) / root Hz at 100 Hz, the product of observable volume and measurement time exceeded that of all previous runs within the first 16 days of coincident observation. On September 14, 2015, the Advanced LIGO detectors observed a transient gravitational-wave signal determined to be the coalescence of two black holes [B. P. Abbott et al., Phys. Rev. Lett. 116, 061102 (2016)], launching the era of gravitational-wave astronomy. The event, GW150914, was observed with a combined signal-to-noise ratio of 24 in coincidence by the two detectors. Here, we present the main features of the detectors that enabled this observation. At full sensitivity, the Advanced LIGO detectors are designed to deliver another factor of 3 improvement in the signal-to-noise ratio for binary black hole systems similar in mass to GW150914.