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arXiv · 2506.08605

Constraints on primordial black holes from interstellar dust temperature in the Galaxy

A. N. Melikhov·E. V. Mikheeva
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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.

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A. N. Melikhov, E. V. Mikheeva. 2025-06-10. Constraints on primordial black holes from interstellar dust temperature in the Galaxy. https://doi.org/10.1103/physrevd.107.063535

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