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Title: PRIMORDIAL BLACK HOLES AS DARK MATTER CANDIDATES
Speaker: Bernard Carr (Queen Mary, University of London) & Florian Kühnel (LMU, Munich)
Abstract:
- Overview, historical introduction, PBHs as link between micro/macrophysics (BC)
- Formation of PBHs (FK)
- Constraints on PBHs (FK)
- PBHs as dark matter and solutions to cosmic conundra (BC)
We review the formation and evaporation of primordial black holes (PBHs) and their possible contribution to dark matter. Various constraints suggest they could only provide most of it in the mass windows 1017 – 1023 g or 1 – 10 M⊙, with the last possibility perhaps being suggested by the LIGO/Virgo observations. However, PBHs could have important consequences even if they have a low cosmological density. Sufficiently large ones might generate cosmic structures and provide seeds for the supermassive black holes in galactic nuclei. Planck-mass relics of PBH evaporations or stupendously large black holes bigger than 1012 M⊙ could also be an interesting dark component.
REFERENCES*
B. Carr and F. Kühnel (Les Houches lectures 2021); arXiv:2110.02821.
B. Carr, S. Clesse, J. Garcıa-Bellido and F. Kühnel, Cosmic conundra explained by thermal history and primordial black holes, Phys. Dark Univ. 31, 100755 (2021); arXiv:1906.08217.
B. Carr, F. Kühnel and L. Visinelli, Black Holes and WIMPs: All or Nothing or Something Else, Mon. Not. Roy. Astron. Soc. 506 364 (2021); arXiv:2011.01930.
B. Carr, F. Kühnel and L. Visinelli, Constraints on Stupendously Large Black Holes, Mon. Not. Roy. Astron. Soc. 501, 2029 (2021); arXiv:2008.08077.
B. Carr, K. Kohri, Y. Sendouda and J. Yokoyama, Constraints on primordial black holes, Rep. Prog. Phys. 84 116902 (2021); arXiv:2002.12778.
B. Carr and F. Kühnel, Primordial Black Holes as Dark Matter: Recent Developments, Ann. Rev. Nucl. Part. Sci. 70, 355 (2020); arXiv:2006.0283.
*We have listed a collection of our own papers which have been published in the last few years. Our lectures will be closely based on the first article. A more complete list of around 500 references, covering the full history of the subject, can be found in the last two papers.
