Accelerating Massive Galaxy Formation with Primordial Black Hole Seed Nuclei
Abstract
Abstract 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 M ⊙ 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.
Fields of Study & Subjects
Galaxies: Formation
Evolution
Phenomena
Astronomy and Astrophysical Research
Electrical and Electromagnetic Research
Publication details
- Journal / source
- The Astronomical Journal
- Publisher
- American Astronomical Society
- Volume
- 171
- Issue
- 5
- Pages
- 275–275
- Publication date
- 9 April 2026
- Language
- EN