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arxiv: 1301.7264 · v1 · pith:UC5TMALKnew · submitted 2013-01-30 · 🌌 astro-ph.HE

Cosmic ray acceleration and escape from supernova remnants

AR Bell , KM Schure , B Reville , G Giacinti This is my paper
classification 🌌 astro-ph.HE
keywords accelerationcosmicenergyescapingkneespectrumsupernovaaccelerate
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Galactic cosmic ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CR escaping the SNR. A model formulated in terms of the electric charge carried by escaping CR predicts the maximum CR energy and the energy spectrum of CR released into the surrounding medium. We find that historical SNR such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CR to the knee at the present time.

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