☆ 4.8 Article

Voyager 1 e± Further Constrain Primordial Black Holes as Dark Mattern

PHYSICAL REVIEW LETTERS (2019)

期刊

PHYSICAL REVIEW LETTERS

卷 122, 期 4, 页码 -

出版社

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevLett.122.041104

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Physics, Multidisciplinary

资金

European Research Council (ERC) under the EU Seventh Framework Program (FP7/2007-2013)/ERC Starting Grant [278234]
Agence Nationale de la Recherche, as part of the program Investissements d'avenir [ANR-11-IDEX-0004-02]

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Primordial black holes (PBHs) with a mass M less than or similar to 10(17) g are expected to inject sub-GeV electrons and positrons in the Galaxy via Hawking radiation. These cosmic rays are shielded by the solar magnetic field for Earth-bound detectors, but not for Voyager 1, which is now beyond the heliopause. We use its data to constrain the fraction of PBHs to the dark matter in the Galaxy, finding that PBHs with M < 10(16) g cannot contribute more than 0.1% (or less for a log-normal mass distribution). Our limits are based on local Galactic measurements and are thus complementary to those derived from cosmological observations.

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