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Record Details

Record 16 of 1916
The diffusion approximation and transport theory for cosmic rays in relativistic flows
External Online Source: doi:10.1086/167462
Author and Affiliation:
Webb, G. M.(Arizona, University, Tucson, United States)
Abstract: Equations describing the transport of cosmic rays in relativistic flows in the diffusion approximation are obtained. The analysis is based on the zeroth, first, and second differential moment equations of the relativistic Boltzmann equation with a BGK collision term. A perturbation solution of the moment equations in the diffusion approximation yields both the co-moving frame particle current and viscous stresses. The resultant cosmic-ray continuity equation contains three readily recognized energy change terms: the adiabatic energy change term; the viscous shear energy change term; and a term proportional to the scalar product of the acceleration vector of the scattering frame and the heat flux.
Publication Date: May 15, 1989
Document ID:
19890053017
(Acquired Nov 28, 1995)
Accession Number: 89A40388
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astrophysical Journal, Part 1; p. 1112-112; (ISSN 0004-637X); 340
Publisher Information: United States
Contract/Grant/Task Num: NSF ATM-83-17701; NSG-7101
Financial Sponsor: NASA; United States
Organization Source: Arizona Univ.; Tucson, AZ, United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COSMIC RAYS; RELATIVISTIC EFFECTS; TRANSPORT THEORY; BOLTZMANN TRANSPORT EQUATION; CONTINUITY EQUATION; MAGNETOHYDRODYNAMICS; PERTURBATION THEORY
Imprint And Other Notes: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 340, May 15, 1989, p. 1112-1123.
Availability Source: Other Sources
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