Limits on Primordial Black Holes from M87

Silk, J.; Stodolsky, L.

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Limits on Primordial Black Holes from M87

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Silk, J.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

Stodolsky, L.
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Citation

Silk, J., & Stodolsky, L. (2022). Limits on Primordial Black Holes from M87. Physical Review D, 105, 063506. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2022-5.

Cite as: https://hdl.handle.net/21.11116/0000-000C-B4A9-A

Abstract

Primordial black holes in the solar mass range are a possibly significant component of dark matter. We show how an argument relating the deflection of light by such black holes in the density spike likely to exist around the M87 supermassive black hole, combined with the high resolution observations of the EHT collaboration, can lead to a strong limits on the primordial black hole mass fraction in an astrophysically relevant mass range. The results depend on the model assumed for the dark matter spike and suggest the interest of further understanding of such spikes as well as further high resolution observations on supermassive black holes.