Diffusive Shock Acceleration Theory Revisited
نویسندگان
چکیده
منابع مشابه
Diffusive Shock Acceleration and Reconnection Acceleration Processes
Shock waves, as shown by simulations and observations, can generate high levels of downstream vortical turbulence, including magnetic islands. We consider a combination of diffusive shock acceleration (DSA) and downstream magnetic-island-reconnection-related processes as an energization mechanism for charged particles. Observations of electron and ion distributions downstream of interplanetary ...
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The mechanism of diffusive Fermi acceleration at collisionless plasma shock waves is widely invoked in astrophysics to explain the appearance of non-thermal particle populations in a variety of environments, including sites of cosmic ray production, and is observed to operate at several sites in the heliosphere. This review outlines the principal results from the theory of diffusive shock accel...
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Context. Radio, X-ray, and gamma-ray observations provide us with strong evidence of particle acceleration to multi-TeV energies in various astrophysical sources. Diffusive shock acceleration is one of the most successful models explaining the presence of such high-energy particles. Aims. We discuss the impact of inverse Compton losses on the shock acceleration of electrons that takes place in ...
متن کاملPresent Status of Diffusive Shock Acceleration
Diffusive shock acceleration (DSA) is now widely accepted as the model to explain the production of cosmic rays (CRs) in a wide range of astrophysical environments. Despite initial successes of the theory in explaining the energetics and the spectrum of CRs accelerated by supernova remnants, there still remain some unresolved issues such as particle injection out of the thermal plasma at shocks...
متن کاملThermal Particle Injection in Nonlinear Diffusive Shock Acceleration
Donald C. Ellison, Pasquale Blasi, Stefano Gabici (a) Physics Dept., North Carolina State Univ., Raleigh, NC 27695, U.S.A. (b) High Energy Astrophysics Group, INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125, Firenze, Italy (c) Humboldt Fellow, Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany Presenter: Don Ellison (don [email protected]), usa...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2006
ISSN: 0004-637X,1538-4357
DOI: 10.1086/504406