Sensitivity of the Advanced LIGO detectors at the beginning of gravitational wave astronomy

Black hole (networking)
DOI: 10.1103/physrevd.93.112004 Publication Date: 2016-06-02T22:08:46Z
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ABSTRACT
The Laser Interferometer Gravitational Wave Observatory (LIGO) consists of two widely separated 4 km laser interferometers designed to detect gravitational waves from distant astrophysical sources in the frequency range 10 Hz kHz. first observation run Advanced LIGO detectors started September 2015 and ended January 2016. A strain sensitivity better than $10^{-23}/\sqrt{\text{Hz}}$ was achieved around 100 Hz. Understanding both fundamental technical noise critical for increasing observable volume universe. average distance at which coalescing binary black hole systems with individual masses 30 $M_\odot$ could be detected 1.3 Gpc. Similarly, neutron star inspirals about 75 Mpc. With respect initial detectors, Universe increased respectively by a factor 69 43. These improvements allowed wave signal coalescence, known as GW150914.
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