GW250114 was a black hole merger detected by LIGO on January 14, 2025. It generated the clearest gravitational wave signal received to date, with a signal-to-noise ratio (SNR) of about 77–80, far clearer than the 42 SNR of the previous best gravitational wave observation (of GW230814). It identified (with a 4.1σ level of significance) the first overtone of the Kerr solution for a rotating black hole. The findings were corroborated in a September 2025 scientific article.
GW250114 was a black hole merger detected by LIGO on January 14, 2025. It generated the clearest gravitational wave signal received to date, with a signal-to-noise ratio (SNR) of about 77–80, far clearer than the 42 SNR of the previous best gravitational wave observation (of GW230814). It identified (with a 4.1σ level of significance) the first overtone of the Kerr solution for a rotating black hole. The findings were corroborated in a September 2025 scientific article.
The discovery is empirical confirmation of Stephen Hawking's area theorem of 1971. It states that even though black holes lose energy from gravitational waves and increasing angular momentum (spin), which can reduce surface area, the total surface area of two merged black holes must increase or remain the same.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).