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Cosmic ray intensity gradients in the solar systemRecent progress in the determination of cosmic-ray intensity gradients is reviewed. Direct satellite measurements of the integral gradient are described together with various types of indirect measurements, including measurements of the Ar-37/Ar-39 ratio in samples from the Lost City meteorite, studies of anisotropies in neutron-monitor counting rates, and analysis of the sidereal diurnal anisotropy observed at a single point on earth. Nucleonic radial gradients and electron gradients measured by satellites in differential energy windows are discussed, and theoretical studies of the physical processes involved in these gradients are summarized. Observations of intensity gradients in heliographic latitude are reported.
Document ID
19750057152
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mckibben, R. B.
(Chicago, University Chicago, Ill., United States)
Date Acquired
August 8, 2013
Publication Date
July 1, 1975
Publication Information
Publication: Reviews of Geophysics and Space Physics
Volume: 13
Subject Category
Space Radiation
Accession Number
75A41224
Funding Number(s)
CONTRACT_GRANT: NSF GA-38913X
CONTRACT_GRANT: NGL-14-001-006
Distribution Limits
Public
Copyright
Other

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