Growing large SMBH at early times with dissipative dark matter

April 29, 2026 PIRSA:26040080 Conference Cosmology

Conference/School: Cosmological Frontiers in Fundamental Physics 2026

(2026). Growing large SMBH at early times with dissipative dark matter. Perimeter Institute. https://pirsa.org/26040080

Growing large SMBH at early times with dissipative dark matter. Perimeter Institute, Apr. 29, 2026, https://pirsa.org/26040080

@misc{ pirsa_PIRSA:26040080,
  doi = {10.48660/26040080},
  url = {https://pirsa.org/26040080},
  author = {},
  keywords = {Cosmology},
  language = {en},
  title = {Growing large SMBH at early times with dissipative dark matter},
  publisher = {Perimeter Institute},
  year = {2026},
  month = {apr},
  note = {PIRSA:26040080 see, \url{https://pirsa.org}}
}

Abstract

Observations by JWST have indicated the presence of large SMBH within the first 500 Myr of the universe. The existence of these black holes require the BH seeds to grow faster than allowed by the Eddington limit. In this talk I will consider the growth of these black holes if a small component of dark matter was dissipative in nature. Using dark atoms as a concrete example of dissipative dark matter, we show that it is possible to grow large BHs in the early universe through accretion of dark atoms or by starting out with larger seeds.