A self-consistent multi-zone kinetic model reproduces SN 1006's spectrum and morphology, finding ~20% CR acceleration efficiency in quasi-parallel shocks, <1% in quasi-perpendicular shocks, and predominantly leptonic gamma-ray emission.
The origin of the spectral intensities of cosmic-ray positrons
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abstract
AMS instrument aboard the International Space Station is a high precision instrument capable of collecting large statistics on cosmic ray intensities and as such has started making highly significant contributions to Astroparticle Physics. In order to fully benefit from these observations, the positron fraction in cosmic rays in their recent publication and other results that will follow, the models to interpret the results have to be equally good. We enlarge on this remark by citing examples from the currently popular model and one of our own fitting the observed spectra of positrons, extending it to higher energies. We also show what one might expect to observe from a mono-energetic source, such as the annihilation of dark matter.
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SN 1006: A Cosmic Laboratory for Investigating Shock Acceleration Physics
A self-consistent multi-zone kinetic model reproduces SN 1006's spectrum and morphology, finding ~20% CR acceleration efficiency in quasi-parallel shocks, <1% in quasi-perpendicular shocks, and predominantly leptonic gamma-ray emission.