Hierarchical Bayesian analysis of GWTC-5 binary black hole spins finds no evidence for superradiant axions and excludes masses 1.7e-14 to 3.3e-12 eV at 95% CL.
Characterizing the continuous gravitational-wave signal from boson clouds around Galactic isolated black holes
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Reanalysis of CAPP-12T axion data sets 90% CL limits on HFGW strain down to 3.9e-21 at 5.311 GHz and excludes certain 10^{-6} solar mass black holes within 0.01 AU via superradiance interpretation.
Black-hole superradiance extracts energy via the ergoregion and can trigger instabilities with applications to dark matter, beyond-Standard-Model physics, and laboratory analogs.
citing papers explorer
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No Evidence for Superradiant Axions in LIGO-Virgo-KAGRA GWTC-5 Binary Black Hole Spins
Hierarchical Bayesian analysis of GWTC-5 binary black hole spins finds no evidence for superradiant axions and excludes masses 1.7e-14 to 3.3e-12 eV at 95% CL.
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Search for high-frequency gravitational waves via re-analysis of cavity axion data
Reanalysis of CAPP-12T axion data sets 90% CL limits on HFGW strain down to 3.9e-21 at 5.311 GHz and excludes certain 10^{-6} solar mass black holes within 0.01 AU via superradiance interpretation.
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Superradiance -- the 2020 Edition
Black-hole superradiance extracts energy via the ergoregion and can trigger instabilities with applications to dark matter, beyond-Standard-Model physics, and laboratory analogs.
- Relativistic frequency shifts in gravitational waves from axion clouds