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Energetic Charged Particles in Saturn's Magnetosphere: Voyager 2 Results

Vogt, R. E. and Chenette, D. L. and Cummings, A. C. and Garrard, T. L. and Stone, E. C. and Schardt, A. W. and Trainor, J. H. and Lal, N. and McDonald, F. B. (1982) Energetic Charged Particles in Saturn's Magnetosphere: Voyager 2 Results. Science, 215 (4532). pp. 577-582. ISSN 0036-8075. http://resolver.caltech.edu/CaltechAUTHORS:20140210-140754733

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Abstract

Results from the cosmic-ray system on Voyager 2 in Saturn's magnetosphere are presented. During the inbound pass through the outer magnetosphere, the ≥ 0.43-million-electron-volt proton flux was more intense, and both the proton and electron fluxes were more variable, than previously observed. These changes are attributed to the influence on the magnetosphere of variations in the solar wind conditions. Outbound, beyond 18 Saturn radii, impulsive bursts of 0.14- to > 1.0- million-electron-volt electrons were observed. In the inner magnetosphere, the charged particle absorption signatures of Mimas, Enceladus, and Tethys are used to constrain the possible tilt and offset of Saturn's internal magnetic dipole. At ∼ 3 Saturn radii, a transient decrease was observed in the electron flux which was not due to Mimas. Characteristics of this decrease suggest the existence of additional material, perhaps another satellite, in the orbit of Mimas.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.215.4532.577DOIArticle
https://www.sciencemag.org/content/215/4532/577PublisherArticle
http://www.jstor.org/stable/1688033OrganizationArticle (JSTOR)
http://www.ncbi.nlm.nih.gov/pubmed/17771281OrganizationPubMed
Additional Information:© 1982 American Association for the Advancement of Science. Received for publication 10 November 1981. We thank the Voyager project members and the enthusiastic staff of our laboratories at Caltech and Goddard Space Flight Center for their splendid support. Special thanks go to W. Althouse, M. Fernandez, R. Kelly, and I. Matus (Caltech), W. Davis. H. Domchick, and D. Stillwell (Goddard), and 0. Divers, E. Franzgrote, and R. Parker (Jet Propulsion Laboratory). Supported by NASA under NAS7-100 and NGR 05-002-160.
Group:Space Radiation Laboratory
Funders:
Funding AgencyGrant Number
NASANAS7-100
NASANGR 05-002-160
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1981-27
Record Number:CaltechAUTHORS:20140210-140754733
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140210-140754733
Official Citation:Vogt, R. E., Chenette, D. L., Cummings, A. C., Garrard, T. L., Stone, E. C., Schardt, A. W., . . . McDonald, F. B. (1982). Energetic Charged Particles in Saturn's Magnetosphere: Voyager 2 Results. Science, 215(4532), 577-582.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43753
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:10 Feb 2014 22:41
Last Modified:22 Apr 2014 17:30

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