Nature · 2022
General-relativistic precession in a black-hole binary.
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Hannam Mark, Hoy Charlie, Thompson Jonathan E, Fairhurst Stephen, Raymond Vivien, Colleoni Marta, Davis Derek, Estellés Héctor, Haster Carl-Johan, Helmling-Cornell Adrian, Husa Sascha, Keitel David, Massinger T J, Menéndez-Vázquez Alexis, Mogushi Kentaro, Ossokine Serguei, Payne Ethan, Pratten Geraint, Romero-Shaw Isobel, Sadiq Jam, Schmidt Patricia, Tenorio Rodrigo, Udall Richard, Veitch John, Williams Daniel, Yelikar Anjali Balasaheb, Zimmerman Aaron
Аннотация
The general-relativistic phenomenon of spin-induced orbital precession has not yet been observed in strong-field gravity. Gravitational-wave observations of binary black holes (BBHs) are prime candidates, as we expect the astrophysical binary population to contain precessing binaries1,2. Imprints of precession have been investigated in several signals3-5, but no definitive identification of orbital precession has been reported in any of the 84 BBH observations so far5-7 by the Advanced LIGO and Virgo detectors8,9. Here we report the measurement of strong-field precession in the LIGO-Virgo-Kagra gravitational-wave signal GW200129. The binary's orbit precesses at a rate ten orders of magnitude faster than previous weak-field measurements from binary pulsars10-13. We also find that the primary black hole is probably highly spinning. According to current binary population estimates, a GW200129-like signal is extremely unlikely, and therefore presents a direct challenge to many current binary-formation models.