Galactic Cosmic Rays from PBHs and Primordial Spectra with a Scale

Details Galactic Cosmic Rays from PBHs and Primordial Spectra with a Scale Galactic Cosmic Rays from PBHs and Primordial Spectra with a Scale

2002-10-07

arxiv.org/abs/astro-ph/0210149v2

Phys.Lett. B551 (2003) 218-225

Astronomy and Astrophysics

Astrophysics

10 pages, 3 figures Version accepted in Phys. Lett. B, conclusions unchanged

Scientific paper

10.1016/S0370-2693(02)03060-5

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.

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