Work

Primordial Black Holes as Coma Cluster Dark Matter and the Unresolved γ-Ray Background

Year: 2025

Type: article

Abstract: If 0.1% of the dark matter (DM) in the Coma cluster is primordial black holes of mass between 1 and 100 × 10−19 M ⊙, then the GeV radiation from the cluster may be Hawking radiation. Dark Energy Survey has mapped the DM in the largest weak lensing maps so far produced. A correlation between the unresolved γ-ray background and large scale structure has been noted. This correlation might find a natural explanation if some of the DM is evaporating primordial black holes, but no correlation is seen. We draw attention to a cluster of Coma-like x-ray clusters, Draco X, at redshift 0.12.

Source: The Astronomical Journal

DOI: 10.3847/1538-3881/adf5c3

Authors: Jeremy Mould, Bhashin Thakore

Institutions: ARC Centre of Excellence for Dark Matter Particle Physics, Swinburne University of Technology, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, University of Turin

Language: English

Topic: Dark Matter and Cosmic Phenomena

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $4,499

Funders: National Aeronautics and Space Administration, California Institute of Technology, Jet Propulsion Laboratory