Which Came First: Supermassive Black Holes or Galaxies? Insights from JWST

Author:

Silk JosephORCID,Begelman Mitchell C.ORCID,Norman ColinORCID,Nusser AdiORCID,Wyse Rosemary F. G.ORCID

Abstract

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.

Funder

Israel Science Foundation

Schmidt Futures

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

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