Affordable Access

Non-linear Cosmic Ray propagation close to the acceleration site

Authors
  • Nava, Lara
  • Gabici, Stefano
  • Marcowith, Alexandre
  • Morlino, Giovanni
  • Ptuskin, Vladimir
Type
Preprint
Publication Date
Sep 07, 2015
Submission Date
Sep 07, 2015
Identifiers
arXiv ID: 1509.02174
Source
arXiv
License
Yellow
External links

Abstract

Recent advances on gamma-ray observations from SuperNova Remnants and Molecular Clouds offer the possibility to study in detail the properties of the propagation of escaping Cosmic Rays (CR). However, a complete theory for CR transport outside the acceleration site has not been developed yet. Two physical processes are thought to be relevant to regulate the transport: the growth of waves caused by streaming instability, and possible wave damping mechanisms that reduce the growth of the turbulence. Only a few attempts have been made so far to incorporate these mechanisms in the theory of CR diffusion. In this work we present recent advances in this subject. In particular, we show results obtained by solving the coupled equations for the diffusion of CRs and the evolution of Alfven waves. We discuss the importance of streaming instabilities and wave damping in different ISM phases.

Report this publication

Statistics

Seen <100 times