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A group of massive galaxies at redshifts of $z\gtrsim 7$ have been recentlydetected by the James Webb Space Telescope (JWST), which were unexpected toform at such early time within the standard Big Bang cosmology. In this work,we propose that this puzzle can be explained by the presence of some primordialblack holes (PBHs) with mass of $\sim 1000 M_\odot$. These PBHs act as seedsfor early galaxies formation with masses of $\sim 10^{8}-10^{10}~M_\odot$ athigh redshift, hence accounting for the JWST observations. We use ahierarchical Bayesian inference framework to constrain the PBH massdistribution models, and find that the Lognormal model with the $M_{\rm c}\sim750M_\odot$ is preferred over other hypotheses. These rapidly growing BHs areexpected to have strong radiation and may appear as the high-redshift compactobjects, similar to those recently discovered by JWST.

Rapidly growing primordial black holes as seeds of the massive high-redshift JWST Galaxies