PIRSA:25030088 Conference Strong Gravity

DOI10.48660/25030088

Conference/School: Magnetic Fields Around Compact Objects Workshop

Siemonsen, N.P. (2025). Dark Photon Superradiance. Perimeter Institute. https://pirsa.org/25030088

Siemonsen, Nils Peter. Dark Photon Superradiance. Perimeter Institute, Mar. 27, 2025, https://pirsa.org/25030088 

@misc{ pirsa_PIRSA:25030088,
  doi = {10.48660/25030088},
  url = {https://pirsa.org/25030088},
  author = {Siemonsen, Nils Peter},
  keywords = {Strong Gravity},
  language = {en},
  title = {Dark Photon Superradiance},
  publisher = {Perimeter Institute},
  year = {2025},
  month = {mar},
  note = {PIRSA:25030088 see, \url{https://pirsa.org}}
}

Abstract

Gravitational and electromagnetic signatures of black hole superradiance are a unique probe of ultralight particles that are weakly-coupled to ordinary matter. Through the kinetic mixing with the Standard Model photon, a dark photon superradiance cloud sources a rotating visible electromagnetic field. I will describe how this leads to the production of a turbulent pair plasma, characterized by efficient magnetic reconnection, which radiates large-luminosity high-energy electromagnetic emissions. This enables multi-messenger search strategies to probe unconstrained regions of parameter space.

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