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Cosmic-Ray Anisotropies as a Function of Time and Direction

Published online by Cambridge University Press:  25 April 2016

J.G. Ables
J.G. Ables*
Affiliation:
Department of Physics, University of Adelaide
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Extract

The cosmic ray flux in the energy range 100 MeV/nucleon ≤ E ≤ 1 GeV/nucleon is remarkable for its high degree of isotropy. Observed deviations from isotropy seldom exceed a few per cent and are commonly much smaller. The mechanism responsible for this isotropy is presumed to be multiple, large-angle scattering of the charged cosmic ray particles by irregularities of the interplanetary magnetic field. While generally precluding any hope of discovering a source-related anisotropy of the flux in this energy range, it is just this strong interaction of the cosmic rays with the interplanetary medium that allows the study of the small observed anisotropies, both persistent and transient, to yield considerable information about the structure of the interplanetary medium (the solar wind and its entrapped magnetic field).

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 1 , Issue 3 , February 1968 , pp. 114 - 115
Copyright
Copyright © Astronomical Society of Australia 1968

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References

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