Which Came First: Supermassive Black Holes or Galaxies? Insights from JWST
Joseph SilkBeecroft Institute of Particle Astrophysics and Cosmology, Department of Physics, University of Oxford, Oxford OX1 3RH, UKMitchell C. BegelmanDepartment of Astrophysical and Planetary Sciences, 391 UCB, Boulder, CO 80309-0391, USAColin NormanDepartment of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USAAdi NusserDepartment of Physics and Asher Space Research Institute, Israel Institute of Technology, Technion, Haifa 32000, IsraelRosemary F. Ġ. WyseDepartment of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA
2024en
ABI
Аннотация
Abstract Insights from JWST observations suggest that active galactic nuclei feedback evolved from a short-lived, high-redshift phase in which radiatively cooled turbulence and/or momentum-conserving outflows stimulated vigorous early star formation (“positive” feedback), to late, energy-conserving outflows that depleted halo gas reservoirs and quenched star formation. The transition between these two regimes occurred at z ∼ 6, independently of galaxy mass, for simple assumptions about the outflows and star formation process. Observational predictions provide circumstantial evidence for the prevalence of massive black holes at the highest redshifts hitherto observed, and we discuss their origins.
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