Acceleration and Composition of Solar Wind Suprathermal Tails |
| |
Authors: | L A Fisk G Gloeckler |
| |
Institution: | (1) Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109-2143, USA;(2) Department of Physics and IPST, University of Maryland, College Park, MD 20742, USA |
| |
Abstract: | Observations in the solar wind have revealed important insights into how energetic particles are accelerated in astrophysical
plasmas. In circumstances where stochastic acceleration is expected, a suprathermal tail on the distribution function is formed
with a common spectral shape: the spectrum is a power law in particle speed with a spectral index of −5. Recent theories for
this phenomenon, in which thermodynamic constraints are applied to explain the common spectral shape, are reviewed. As an
example of potential extensions of this theoretical work, consideration is given to the acceleration of Anomalous Cosmic Rays
in the heliosheath. |
| |
Keywords: | Solar wind Stochastic acceleration Cosmic rays |
本文献已被 SpringerLink 等数据库收录! |
|