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Local Flux of Low-Energy Antiprotons from Evaporating Primordial Black Holes

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arxiv astro-ph/9601025 v1 pith:QGJAZRVM submitted 1996-01-08 astro-ph

K. Maki , T. Mitsui , S. Orito (University of Tokyo) This is my paper · ORCID
classification astro-ph
keywords fluxlocalpbhsantiprotonsblackevaporatingholeslow-energy
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abstract

We investigate low-energy cosmic-ray antiprotons ($\bar{p}$'s) arising from the fragmentation of quarks and gluons emitted from evaporating primordial black holes (PBHs). To calculate the local interstellar flux of these $\bar{p}$'s, their propagation in the Galaxy is described by a 3-D Monte Carlo simulation based on the diffusion model. This flux is used with recent observations to derive new upper limits on (i) the local PBH explosion rate ${\cal R}<1.7\times10^{-2}$ pc$^{-3}$yr$^{-1}$, (ii) the fraction of the Universe's mass going into PBHs with particular mass, and (iii) the average density of PBHs in the Universe.

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Cited by 3 Pith papers

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

  1. Antinuclei from Primordial Black Holes

    hep-ph 2025-05 conditional novelty 6.0 of 10

    AMS-02 antiproton data set the tightest limits yet on Galactic primordial black holes with lognormal mass distributions, and cap the expected antideuteron flux below the reach of upcoming detectors.

  2. Constraints on Primordial Black Holes from Galactic Diffuse Synchrotron Emissions

    hep-ph 2026-01 conditional novelty 5.0 of 10

    Galactic synchrotron emissions above 20 MHz can set tighter upper limits on the abundance of primordial black holes with masses above 10^16 grams than previous cosmic-ray electron data.

  3. Constraints on Primordial Black Holes

    astro-ph.CO 2020-02 accept novelty 4.0 of 10

    Updated compilation shows PBHs are tightly constrained across 55 orders of magnitude in mass, ruling out dominant dark matter contributions except in narrow windows, with many limits carrying observational uncertainties.

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