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Evidence for Primary Interstellar Cosmic-Ray Electrons

Cummings, A. C. and Stone, E. C. and Vogt, R. E. (1973) Evidence for Primary Interstellar Cosmic-Ray Electrons. In: Proceedings of the 13th International Cosmic Ray Conference. Colorado Associated University Press , Denver, CO, pp. 340-345.

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We have performed a comparative study of the absolute solar modulation of cosmic-ray positrons (e^+) and electrons (e^+ + e^-). We find that the interstellar electron spectrum, which is described by a power-law slope at higher energies, must flatten below ~ 100 MeV, that a significant fraction of interstellar cosmic-ray electrons must originate in "primary" sources, and that the rigidity dependence of the interplanetary cosmic-ray diffusion coefficient, R^α, changes from α>O at higher rigidities to α ≈ -1 below ~ 60 MV.

Item Type:Book Section
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URLURL TypeDescription
Cummings, A. C.0000-0002-3840-7696
Stone, E. C.0000-0002-2010-5462
Additional Information:© 1973 University of Colorado. Provided by the NASA Astrophysics Data System. This work supported by the National Aeronautics and Space Administration, Grant NGR 05-002-160. One of us (Stone) was an Alfred P. Sloan research fellow, and another (Cummings) was a NASA Trainee during this work.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
Alfred P. Sloan Research FellowshipUNSPECIFIED
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1973-09
Record Number:CaltechAUTHORS:20140409-090558716
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ID Code:44809
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Deposited On:10 Apr 2014 21:42
Last Modified:20 Feb 2020 14:33

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