http://arxiv.org/abs/2002.08291
The worldwide advanced gravitational-wave (GW) detector network has so far primarily consisted of the two Advanced LIGO observatories at Hanford and Livingston, with Advanced Virgo joining the 2016-7 O2 observation run at a relatively late stage. However, in the O3 science run three detectors have been simultaneously operating at all times. In the near future, the KAGRA detector will join the global network and a further LIGO detector in India is under construction. Gravitational-wave search methods must therefore be able to analyse data from an arbitrary network of detectors. In this paper we extend the PyCBC offline compact binary coalescence (CBC) search analysis to three or more detectors, and describe resulting updates to the coincident search and event ranking statistic. For a three-detector network, our improved multi-detector search finds 20% more simulated signals at fixed false alarm rate in idealized colored Gaussian noise, and up to 40% more in real data, compared to the two-detector analysis previously used during O2.
G. Davies, T. Dent, M. Tápai, et. al.
Thu, 20 Feb 20
37/61
Comments: 12 pages, 6 figures