Cosmic Ray Acceleration: Sites and Mechanisms

Details Cosmic Ray Acceleration: Sites and Mechanisms Cosmic Ray Acceleration: Sites and Mechanisms

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..apr.b1005s&link_type=abstract

American Physical Society, April Meeting, April 28 - May 1, 2001 Washington, DC Bulletin of the American Physical Society, Vol.

Physics

Scientific paper

Ultra-high energy cosmic rays offer a unique opportunity to test cosmic ray acceleration mechanisms at extreme conditions. I will present recent results of the quasilinear cosmic ray transport theory with respect to resonant wave-particle acceleration, both in the interstellar medium and in powerful extragalactic sources as active galactic nuclei and gamma-ray bursts. It is shown that observing and modelling the cosmic plasma turbulence beyond the magnetostatic approximation is crucial for the understanding of cosmic ray acceleration. In particular, higher harmonics resonant interactions with obliquely propagating MHD waves play an important role for the acceleration of cosmic rays beyond the knee.

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