Review of the Advanced LIGO Gravitational Wave Observatories Leading to Observing Run Four

被引：52
作者：
Cahillane, Craig [1 ]
Mansell, Georgia [1 ,2 ,3 ]
机构：
[1] LIGO Hanford Observ, Richland, WA 99352 USA
[2] MIT, LIGO, Cambridge, MA 02139 USA
[3] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA
来源：
GALAXIES | 2022年 / 10卷 / 01期
基金：
美国国家科学基金会;
关键词：
gravitational wave detectors; optomechanics; low-noise high-power laser interferometry; RECYCLED MICHELSON INTERFEROMETER; LASER POWER STABILIZATION; RADIATION-PRESSURE; SIGNAL EXTRACTION; THERMAL NOISE; ALIGNMENT; MIRROR; FLUCTUATIONS; DETECTORS; CAVITIES;
D O I：
10.3390/galaxies10010036
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Gravitational waves from binary black hole and neutron star mergers are being regularly detected. As of 2021, 90 confident gravitational wave detections have been made by the LIGO and Virgo detectors. Work is ongoing to further increase the sensitivity of the detectors for the fourth observing run, including installing some of the A+ upgrades designed to lower the fundamental noise that limits the sensitivity to gravitational waves. In this review, we will provide an overview of the LIGO detectors optical configuration and lock acquisition procedure, discuss the detectors' fundamental and technical noise limits, show the current measured sensitivity, and explore the A+ upgrades currently being installed in the detectors.
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页数：30
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