Accelerating massive galaxy formation with primordial black hole seed nuclei

Fuente: arXiv

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Detalles Bibliográficos
Autor principal:	Mould, Jeremy
Formato:	Preprint
Publicado:	2026
Materias:	Astrophysics of Galaxies
Acceso en línea:	Acceder al recurso
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author	Mould, Jeremy
author_facet	Mould, Jeremy
contents	If massive primordial black holes (PBHs) exist and constitute a fraction of the dark matter, they can dramatically catalyze galaxy formation. By acting as pre-existing, high-density seeds, they can shorten the galaxy assembly time to as little as 100 Myr for up to 10^8 solar mass PBH seeds, allowing for the rapid formation of host halos. Furthermore, low surface brightness or diffuse galaxies may represent a natural outcome of this process, perhaps as the residue of halos seeded by smaller PBHs that failed to accrete a major baryonic component.
format	Preprint
id	arxiv_https___arxiv_org_abs_2603_04784
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	Accelerating massive galaxy formation with primordial black hole seed nuclei Mould, Jeremy Astrophysics of Galaxies If massive primordial black holes (PBHs) exist and constitute a fraction of the dark matter, they can dramatically catalyze galaxy formation. By acting as pre-existing, high-density seeds, they can shorten the galaxy assembly time to as little as 100 Myr for up to 10^8 solar mass PBH seeds, allowing for the rapid formation of host halos. Furthermore, low surface brightness or diffuse galaxies may represent a natural outcome of this process, perhaps as the residue of halos seeded by smaller PBHs that failed to accrete a major baryonic component.
title	Accelerating massive galaxy formation with primordial black hole seed nuclei
topic	Astrophysics of Galaxies
url	https://arxiv.org/abs/2603.04784

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