Nonlinear Cosmic Ray Diffusion Theories

Softcover Nachdruck of hardcover 1. Auflage 2009
ISBN: 978-3-642-10139-7
Verlag: Springer

Buch, Englisch, Band 362, 199 Seiten, Paperback, Format (B × H): 155 mm x 235 mm, Gewicht: 335 g

Reihe: Astrophysics and Space Science Library

If charged particles move through the interplanetary or interstellar medium, they interact with a large-scale magnetic ?eld such as the magnetic ?eld of the Sun or the Galactic magnetic ?eld. As these background ?elds are usually nearly constant in time and space, they can be approximated by a homogeneous ?eld. If there are no additional ?elds, the particle trajectory is a perfect helix along which the par- cle moves at a constant speed. In reality, however, there are turbulent electric and magnetic?elds dueto the interstellaror solar wind plasma. These ?elds lead to sc- tering of the cosmic rays parallel and perpendicular to the background ?eld. These scattering effects, which usually are of diffusive nature, can be described by s- tial diffusion coef?cients or, alternatively, by mean free paths. The knowledge of these parameters is essential for describing cosmic ray propagation as well as d- fusive shock acceleration. The latter process is responsible for the high cosmic ray energies that have been observed. The layout of this book is as follows. In Chap. 1, the general physical scenario is presented. We discuss fundamental processes such as cosmic ray propagation and acceleration in different systems such as the solar system or the interst- lar space. These processes are a consequence of the interaction between charged cosmic particles and an astrophysical plasma (turbulence). The properties of such plasmas are therefore the subject of Chap. 2.

Zielgruppe

Research

Autoren/Hrsg.

Shalchi, Andreas

Fachgebiete

• Naturwissenschaften Physik Angewandte Physik Astrophysik
• Naturwissenschaften Physik Quantenphysik Teilchenphysik
• Naturwissenschaften Physik Thermodynamik Plasmaphysik
• Naturwissenschaften Astronomie Astrophysik

Inhaltsverzeichnis

The General scenario.- On Astrophysical Turbulence.- The Quasilinear Theory.- The Nonlinear Guiding Center Theory.- The Weakly Nonlinear Theory.- The Second-Order QLT.- The Extended Nonlinear Guiding Center Theory.- Applications.- Summary and Outlook.