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CMB and BBN constraints on evaporating primordial black holes revisited

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arxiv 2002.00898 v2 pith:HFBLGOKB submitted 2020-02-03 astro-ph.CO astro-ph.HEhep-ph

classification astro-ph.COastro-ph.HEhep-ph
keywords constraintsblackholesemittedevaporatingprimordialabundancesanisotropies
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abstract

We derive new CMB anisotropy power spectrum and BBN constraints for evaporating primordial black holes by explicitly solving the electromagnetic particle cascades of emitted particles and the deposition of this emitted energy to the background baryon-photon plasma. We show that the CMB anisotropies can provide stronger constraints compared to BBN and CMB spectral distortions on black holes with masses as small as $M_{\rm BH}=1.1\times 10^{13}$g, a slightly smaller mass than what has been considered in literature until now. We also show that, with more up-to-date data on abundances of deuterium and helium-3, BBN constraints are strengthened significantly.

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Forward citations

Cited by 5 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. Boosting the optical depth to Thomson scattering with primordial black hole evaporation at high redshift

    astro-ph.CO 2026-08 accept novelty 6.0 of 10

    A monochromatic primordial black hole population can raise the CMB optical depth by at most Delta tau ~ 0.008 under current CMB data, leaving BAO-CMB tensions essentially unchanged.

  3. Primordial black holes through preheating instabilities in $\alpha$-attractor models

    astro-ph.CO 2025-05 conditional novelty 5.0 of 10

    In alpha-attractor models, preheating self-resonance can form primordial black holes of 10^2 to 10^7 g, with the Khlopov-Polnarev collapse formalism staying viable and the Press-Schechter formalism overproducing.

  4. Anisotropic Neutrino Emission from Spinning, Moving, and Charged Primordial Black Holes

    astro-ph.CO 2025-08 reject novelty 4.0 of 10

    Kerr-Newman black holes moving relativistically emit neutrinos in a narrow forward cone, a combination of known spin and Doppler effects.

  5. 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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