Constraints on primordial black holes from interstellar dust temperature in the Galaxy
arXiv:2506.08605 · doi:10.1103/PhysRevD.107.063535
Abstract
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.
5 pages, 2 figures; typos in the bibliography are fixed