Stochastic Electron Acceleration in SNR RX J1713.7-3946

Details Stochastic Electron Acceleration in SNR RX J1713.7-3946 Stochastic Electron Acceleration in SNR RX J1713.7-3946

2011-12-29

arxiv.org/abs/1112.6316v2

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

5 pages, 3 figures

Scientific paper

Stochastic acceleration of charged particles due to their interactions with plasma waves may be responsible for producing superthermal particles in a variety of astrophysical systems. This process can be described as a diffusion process in the energy space with the Fokker-Planck equation. In this paper, a time-dependent numerical code is used to solve the reduced Fokker-Planck equation involving only time and energy variables with general forms of the diffusion coefficients. We also propose a self-similar model for particle acceleration in Sedov explosions and use the TeV SNR RX J1713.7-3946 as an example to demonstrate the model characteristics. Markov Chain Monte Carlo method is utilized to constrain model parameters with observations.

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