Cosmic-ray streaming perpendicular to the mean magnetic field - II: The gyrophase distribution function

M. A. Forman, J. Randy Jokipii

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The distribution function of cosmic rays streaming perpendicular to the mean magnetic field in a turbulent medium is re-examined. Urch's (1977) discovery that, in quasilinear theory, the flux is due to particles at 90° pitch angle is discussed and shown to be consistent with previous formulations of the theory. We point out that this flux of particles at 90° cannot be arbitrarily set equal to zero, and hence we dismiss the alternative theory which proceeds from this premise. A further, basic inconsistency in Urch's new transport equation is demonstrated, and the connection between quasilinear theory and compound diffusion is discussed.

Original languageEnglish (US)
Pages (from-to)507-513
Number of pages7
JournalAstrophysics and Space Science
Volume53
Issue number2
DOIs
StatePublished - Feb 1978

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cosmic ray
cosmic rays
distribution functions
magnetic field
pitch (inclination)
magnetic fields
formulations
distribution
particle

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Cosmic-ray streaming perpendicular to the mean magnetic field - II : The gyrophase distribution function. / Forman, M. A.; Jokipii, J. Randy.

In: Astrophysics and Space Science, Vol. 53, No. 2, 02.1978, p. 507-513.

Research output: Contribution to journalArticle

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