A statistical test of gravitational wave events

• 1、SKLSM, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

Abstract：Here reports my statistical analysis of all the 93 gravitational wave (GW) events in the last 6 years, using the online public data from the LIGO Scientific Team (LIGO Scientific Collaboration, LSC ). During the second observation period, the detecting rate of GW events increased a lot when the Virgo was launched officially, though the LIGO detection sensitivity did not change significantly. Since the third observation period starts, the rate of each station remained almost unchanged or slightly decreased, far from reaching the expected trifold increase. Furthermore, during the third observation period, the occurrence rate of the 82 GW events is closer to the equal probability distribution, not as expected from the co-working ratio. Therefore, the currently published GW observations do not meet the simple expectation that the higher the detection sensitivity, the longer the effective observation time, the more gravitational wave events are observed. This result may draw more attention to the detection and analysis of LIGO gravitational wave events.

Keywords： Gravitational wave Gravitational wave detection Statistical test