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Heliospheric Effects on Cosmic-Ray Electrons

Moraal, H. and Jokipii, J. R. and Mewaldt, R. A. (1991) Heliospheric Effects on Cosmic-Ray Electrons. Astrophysical Journal, 367 . pp. 191-199. ISSN 0004-637X.

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Motivated by the success of current modulation models in interpreting the solar modulation of Galactic cosmic-ray nuclei, we consider several effects on cosmic-ray electrons which are new or which have not yet been fully explored. Among these are the contribution of Galactic positrons to the total electron flux, the production of secondary electrons from solar system objects, and the possibility of electrons being accelerated at the solar wind termination shock ("anomalous" cosmic-ray electrons). We find that the first of these provides a natural interpretation of the time variations of Galactic cosmic-ray electrons. Jovian electrons and thermal solar wind electrons may be accelerated to cosmic-ray energies at the termination shock. Such acceleration effects may alter the time-intensity profiles of electrons at Earth, further modifying the interpretation of the electron modulation.

Item Type:Article
Mewaldt, R. A.0000-0003-2178-9111
Additional Information:Copyright 1991, American Astronomical Society. Received 1990 April 25; accepted 1990 June 15. The work of R. A. M. and H. M. was supported in part by NASA under contracts NAS-7-918, NAS 5-727, and grant NGR 05-002-160. J. R. J. was supported in part, by the National Science Foundation under grant ATM-8618260 and by the National Aeronautics and Space Administration under grant NAGW-1931.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1991-04
Record Number:CaltechAUTHORS:20140509-111857082
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45642
Deposited By: Deborah Miles
Deposited On:12 May 2014 20:56
Last Modified:22 Nov 2019 09:58

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