The photons emitted by primordial black holes (PBHs) can be a heating factor for interstellar dust. Assuming that dust in the Galaxy has a homogeneous distribution and that PBHs have the same distribution as dark matter (DM), we constrain the fraction of PBHs in DM from the observational dust temperature in the Galaxy.
@article{arxiv.2506.08605,
title = {Constraints on primordial black holes from interstellar dust temperature in the Galaxy},
author = {A. N. Melikhov and E. V. Mikheeva},
journal= {arXiv preprint arXiv:2506.08605},
year = {2025}
}
Comments
5 pages, 2 figures; typos in the bibliography are fixed