Anisotropy in cosmic-ray intensity associated with Forbush decreases
A study of the Forbush decrease of 23 September 1966 shows that the predecrease anisotropy developed from a direction 85° to the west of the sun–earth line. The rate of development of the anisotropy suggests that the "turbulent" plasma producing the Forbush decrease occupied a volume of diameter ≈0.2–0.3 AU. If the plasma clouds away from the earth produced the anisotropy at the earth, then it is reasonable to attribute a part of the highly variable daily variation in cosmic-ray intensity to such distant scattering centers.
1961 ◽
Vol 263
(1312)
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pp. 127-135
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Keyword(s):
39. The anisotropy of primary cosmic radiation and the electromagnetic state in interplanetary space
1958 ◽
Vol 6
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pp. 377-385
Keyword(s):
The Sun
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2006 ◽
Vol 23
(3)
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pp. 129-134
Keyword(s):
1992 ◽
Vol 19
(14)
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pp. 1423-1426
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