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Primordial Black Holes as a Dark Matter Candidate Are Severely Constrained by the Galactic Center 511 keV $\gamma$ -Ray Line
We derive the strongest constraint on the fraction of dark matter that can be composed of low mass primordial black holes by using the observation of the Galactic Center 511 keV γ-ray line. Primordial black holes of masses ≲1015 kg will evaporate to produce e± pairs. The positrons will lose energy...
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| Lenguaje: | eng |
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2019
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| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.123.251101 http://cds.cern.ch/record/2679800 |