Anomalous diffusion of cosmic rays across the magnetic field

Details Anomalous diffusion of cosmic rays across the magnetic field Anomalous diffusion of cosmic rays across the magnetic field

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279..278c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 1, p. 278-297

Astronomy and Astrophysics

Astrophysics

38

Anomalies, Astronomical Models, Diffusion, Diffusion Coefficient, Galactic Cosmic Rays, Interstellar Matter, Kinetic Equations, Magnetic Fields, Mathematical Models, Transport Theory, Turbulence, Collision Parameters, Energy Distribution, Magnetohydrodynamic Waves, Magnetohydrodynamics, Resonance Scattering

Scientific paper

Cosmic ray transport across the average magnetic field in the turbulent medium is studied. The action of small-scale turbulence causing the resonance scattering of cosmic rays is described by the model collision integral in a tau-approximation. This scattering provides local diffusion of the particles mainly in the average field direction. The large-scale random magnetic field and the random motions of the medium give rise to an additional perpendicular diffusion. General expressions for the perpendicular diffusion coefficient have been found in a system with a weakly-fluctuating large-scale magnetic field, together with the expressions for the turbulent diffusion coefficients. Perpendicular transport of strongly magnetized particles in a random static magnetic field (the compound-diffusion regime) is studied, and the compound diffusion equation and its one-dimensional non-stationary solution have been found. Destruction of the compound-diffusion regime in a stochastic magnetic field is studied. The new regimes of cosmic ray propagation found in the Galaxy are discussed. We suggest an explanation of flattening of the observed energy dependence of the mean amount of interstellar matter traversed by cosmic rays at energies E less than 2 GeV/nucleon.

Affiliated with

Also associated with

No associations

Rating

Anomalous diffusion of cosmic rays across the magnetic field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Anomalous diffusion of cosmic rays across the magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous diffusion of cosmic rays across the magnetic field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-807402