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Solar‐polar coronal holes and the north‐south cosmic ray gradient
Author(s) -
Agrawal S. P.,
Lanzerotti L. J.,
Venkatesan D.
Publication year - 1978
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl005i007p00589
Subject(s) - polar , coronal hole , cosmic ray , physics , astrophysics , cosmic cancer database , astronomy , coronal loop , coronal plane , corona (planetary geology) , coronal mass ejection , solar wind , astrobiology , plasma , nuclear physics , medicine , venus , radiology
We show, using Skylab measures of solar polar coronal hole areas, that during non‐disturbed periods the north‐south gradient of galactic cosmic rays as measured at 1 AU depends upon the difference in areas of the polar coronal holes. Higher cosmic ray fluxes are observed from the polar direction with the smaller coronal hole area.