Closing the Mass Window for Stupendously Large Black Holes
Cosmology and Nongalactic Astrophysics
2025-08-12 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We show that primordial black holes (PBHs) in the mass range () produce isocurvature perturbations exceeding current Cosmic Microwave Background limits, thereby excluding them as a significant dark matter component.
Keywords
Cite
@article{arxiv.2508.08238,
title = {Closing the Mass Window for Stupendously Large Black Holes},
author = {Christopher Gerlach and Yann Gouttenoire and Antonio J. Iovino and Nicholas Leister},
journal= {arXiv preprint arXiv:2508.08238},
year = {2025}
}
Comments
4 pages, 2 figures