Astrophysics

    

A Statistical Test of Gravitational Wave Events

Authors: Yang Ji

Here I show some statistics of all the 93 gravitational wave (GW) events observed by LIGO in 3 phases during the last 6 years, with 3, 8 and 82 GW events for each phase. The detection sensitivity in O3 phase was increased by 40\% than that in O2 phase. The co-working ratio of the two LIGO observatories was 0.42 (O2 phase) and 0.60 (O3 phase), respectively. The product of sensitive volume and time (VT) was thus increased by a factor of $1.4^3 \times (0.60/0.42) \approx 4$. Statistical analyses of all the 93 GW events suggest that the observations so far do not meet an intuitive expectation, say, with higher detection sensitivity and longer observation time, we should observe more GW events.

Comments: 10 Pages. 3 figures. A Chinese Version is also given in the appendix.

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Submission history

[v1] 2022-04-16 09:01:17

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