Cosmic ray antiprotons and the single source model
نویسندگان
چکیده
منابع مشابه
Cosmic Ray Antiprotons
Interstellar (IS) cosmic rays consist mainly of protons with a smaller admixture of heavier nuclei. Antiprotons (p’s) occur at an abundance of 10 of p’s. These energetic particles, kinetic energy K > 10 MeV, are Galactic in origin, not to be confused with the much denser solar wind plasma, with much lower K. The relative element abundances in cosmic rays (CRs) indicate that CR primaries are ion...
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The PAMELA experiment is a satellite-borne apparatus designed to study charged particles, and especially antiparticles, in the cosmic radiation. The apparatus is mounted on the Resurs DK1 satellite which was launched on 15 June 2006. PAMELA has been traveling around the earth along an elliptical and semi-polar orbit for almost five years. It mainly consists of a permanent magnetic spectrometer,...
متن کاملCosmic–ray Antiprotons from Neutralino Annihilation in the Halo
We report the main results of a paper where recent data of low–energy cosmic–ray p̄ spectrum have been analyzed in terms of newly calculated fluxes for secondary antiprotons and for a possible contribution of an exotic signal due to neutralino annihilation in the galactic halo. We also present the results of a paper in which we have proved that a sizeable fraction of the supersymmetric neutralin...
متن کاملDiffuse Galactic gamma rays, cosmic-ray nucleons and antiprotons
The excess of continuum γ-ray emission from the Galaxy above 1 GeV is an unsolved puzzle. It may indicate that the interstellar nucleon or electron spectra are harder than local direct measurements, as could be the case if a local source of cosmic rays were to dominate the nearby flux. It is however difficult to distinguish between the two cases. Cosmic-ray secondary antiprotons provide a way t...
متن کاملCosmic-ray antiprotons from neutralino annihilation into gluons.
We estimate the ux of cosmic-ray antiprotons expected from the annihilation of neutralinos in the galactic halo. The antiproton signal may ooer an important alternative detection scheme in the case that neutralino annihilation proceeds mainly to the two-gluon nal state.
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2015
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/42/11/115202