Gamma-ray bursters as sources of cosmic rays

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dc.creatorMilgrom, Mordehai
dc.creatorUsov, Vladimir
dc.date1995-06-20
dc.date.accessioned2026-07-07T10:34:50Z
dc.date.available2026-07-07T10:34:50Z
dc.descriptionThe little we do know of the physical conditions in gamma-ray bursters makes them conducive to the acceleration of high-energy cosmic rays, especially if they are at cosmological distances. We find that, with the observed statistics and fluxes of gamma-ray bursts, cosmological bursters may be an important source of cosmic rays in two regions of the observed spectrum: 1. At the very-high-energy end (E>10^{19} eV), where cosmic rays must be of extragalactic origin. 2. Around and above the spectral feature that has been described as a bump and/or a knee, which occurs around 10^{15} eV, and starts at about 10^{14} eV. The occasional bursters that occur inside the Galaxy--about once in a few hundred thousand years if burst emission is isotropic; more often, if it is beamed--could maintain the density of galactic cosmic rays at the observed level in this range. These two energy ranges might correspond to two typical energy scales expected from bursters: one pertinent to acceleration due to interaction of a magnetized-fireball front with an ambient medium; the other to acceleration in the fireball itself (e.g. shock acceleration).
dc.description12 pages in Latex
dc.identifierhttps://arxiv.org/abs/astro-ph/9506099
dc.identifierhttp://arxiv.org/abs/astro-ph/9506099
dc.identifierAstropart.Phys.4:365-370,1996
dc.identifierdoi:10.1016/0927-6505(95)00052-6
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179571
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGamma-ray bursters as sources of cosmic rays
dc.typetext

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