Summary of Tests of General Relativity with GWTC-3

Understand

Observations of gravitational waves (GWs) by the advanced LIGO--Virgo detectors provide us with ground breaking opportunities to test predictions of Einstein's theory of general relativity (GR) in the strong field regime.

• In this article, we summarise the nine tests of GR performed on the new GW signals included in the third GW transient catalog, GWTC-3.
• These tests include overall and self-consistency checks of the signal with the data; tests of the GW generation, propagation and polarizations; and probes of the nature of the remnant object by testing the BH ringdown hypothesis and searching for post-merger echoes.
• The results from the new events are combined with those previously published wherever possible.