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Dark matter and dark radiation from evaporating Kerr primordial black holes

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arxiv 2103.13825 v1 pith:LTMHBM5A submitted 2021-03-24 gr-qc astro-ph.COhep-ph

classification gr-qcastro-ph.COhep-ph
keywords darkcaseblackmatterholeskerrradiationchange
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The mechanism of the generation of dark matter and dark radiation from the evaporation of primordial black holes is very interesting. We consider the case of Kerr black holes to generalize previous results obtained in the Schwarzschild case. For dark matter, the results do not change dramatically and the bounds on warm dark matter apply similarly: in particular, the Kerr case cannot save the scenario of black hole domination for light dark matter. For dark radiation, the expectations for $\Delta N_{eff}$ do not change significantly with respect to the Schwarzschild case, but for an enhancement in the case of spin 2 particles: in the massless case, however, the projected experimental sensitivity would be reached only for extremal black holes.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Primordial black holes as cosmic accelerators of light dark matter: Novel direct detection constraints

    hep-ph 2026-02 unverdicted novelty 7.0 of 10

    Primordial black hole evaporation generates light fermionic dark matter capable of producing electron recoils in XENONnT, LZ, and PandaX-4T, enabling new constraints on DM-electron interactions after including Earth a...

  2. Probing Double-Peaked Gamma-Ray Spectra from Primordial Black Holes with Next-Generation Gamma-Ray Experiments

    hep-ph 2025-07 conditional novelty 4.0 of 10

    A likelihood forecast shows e-ASTROGAM could, in parts of the f1-f2 plane, distinguish double-peaked from single-peaked PBH gamma-ray spectra in the 1e15 to 1e17 g mass window.

  3. Relativistic accretion and burdened primordial black holes

    astro-ph.CO 2025-07 conditional novelty 4.0 of 10

    Combining relativistic accretion with memory-burdened evaporation widens the parameter space for primordial black holes as dark matter and changes dark matter and dark radiation emission predictions.

  4. New bounds on Memory Burdened Primordial Black Holes from Big Bang Nucleosynthesis

    astro-ph.CO 2025-06 reject novelty 4.0 of 10

    Memory-burdened primordial black holes lighter than 10^9 grams are newly constrained by Big Bang nucleosynthesis, with a residual unconstrained window around 1-100 grams for suppression index k=2.

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