Stringent Constraint on Galactic Positron Production

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dc.creatorBeacom, John F.
dc.creatorYuksel, Hasan
dc.date2005-12-15
dc.date2006-08-15
dc.date.accessioned2026-07-07T11:25:06Z
dc.date.available2026-07-07T11:25:06Z
dc.descriptionThe intense 0.511 MeV gamma-ray line emission from the Galactic Center observed by INTEGRAL requires a large annihilation rate of nonrelativistic positrons. If these positrons are injected at even mildly relativistic energies, higher-energy gamma rays will also be produced. We calculate the gamma-ray spectrum due to inflight annihilation and compare to the observed diffuse Galactic gamma-ray data. Even in a simplified but conservative treatment, we find that the positron injection energies must be $\lesssim 3$ MeV, which strongly constrains models for Galactic positron production.
dc.description4 pages, 2 figures; minor revisions, accepted for publication in PRL
dc.identifierhttps://arxiv.org/abs/astro-ph/0512411
dc.identifierhttp://arxiv.org/abs/astro-ph/0512411
dc.identifierPhys.Rev.Lett.97:071102,2006
dc.identifierdoi:10.1103/PhysRevLett.97.071102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195404
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleStringent Constraint on Galactic Positron Production
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