A Symbiotic Scenario for the Rapid Formation of Supermassive Black Holes

Abstract

The most massive black holes, lurking at the centers of large galaxies, must have formed less than a billion years after the big bang, as they are visible today in the form of bright quasars at redshift larger than six. Their early appearance is mysterious, because the radiation pressure, generated by infalling ionized matter, inhibits the rapid growth of these black holes from stellar-mass black holes. Here we show that the supermassive black holes may form timeously through the accretion of radiationless and densely packed neutrino dark matter onto stellar-mass black holes. Our symbiotic scenario relies on the formation of, first, supermassive degenerate sterile neutrino balls through gravitational cooling and, then, stellar-mass black holes through supernova explosions of massive stars at the center of the neutrino balls. The observed lower and upper limits of the supermassive black holes are explained by the corresponding mass limits of the preformed neutrino balls.

arXiv comment10 pages, 3 figures

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Cited by in corpus (7)

• Chern-Simons Modified General Relativity
• The role of sterile neutrinos in cosmology and astrophysics
• How to find neutral leptons of the nuMSM?
• A log-quadratic relation for predicting supermassive black hole masses from the host bulge Sersic index
• Sterile neutrino dark matter as a consequence of nuMSM-induced lepton asymmetry
• Dark matter concentrations in galactic nuclei according to polytropic models
• Dark halo microphysics and massive black hole scaling relations in galaxies