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Galactic Cosmic Rays from PBHs and Primordial Spectra with a Scale
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abstract
We consider the observational constraints from the detection of antiprotons in the Galaxy on the amount of Primordial Black Holes (PBH) produced from primordial power spectra with a bumpy mass variance. Though essentially equivalent at the present time to the constraints from the diffuse $\gamma$-ray background, they allow a widely independent approach and they should improve sensibly in the nearby future. We discuss the resulting constraints on inflationary parameters using a Broken Scale Invariance (BSI) model as a concrete example.
Forward citations
Cited by 3 Pith papers
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Antinuclei from Primordial Black Holes
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.
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Directional Neutrino Bursts from Spinning and Moving Primordial Black Holes
The paper claims spinning, fast-moving primordial black holes produce collimated high-energy neutrino bursts that IceCube and KM3NeT could detect, and asserts new abundance constraints from their non-observation.
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Constraints on Primordial Black Holes
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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