A unified relativistic framework using bilinear perturbation theory calculates frequency shifts in GWs from axion clouds, handling self-interactions and multiple superradiant modes for the first time.
Baryakhtaret al., Dark Matter In Extreme Astro- physical Environments (2022), Snowmass 2021 White Pa- per, arXiv:2203.07984
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Relativistic frequency shifts in gravitational waves from axion clouds
A unified relativistic framework using bilinear perturbation theory calculates frequency shifts in GWs from axion clouds, handling self-interactions and multiple superradiant modes for the first time.