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Energetic Charged Particles in Saturn's Magnetosphere: Voyager 1 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. (1981) Energetic Charged Particles in Saturn's Magnetosphere: Voyager 1 Results. Science, 212 (4491). pp. 231-234. ISSN 0036-8075. doi:10.1126/science.212.4491.231.

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Voyager 1 provided the first look at Saturn's magnetotail and magnetosphere during relatively quiet interplanetary conditions. This report discusses the energetic particle populations of the outer magnetosphere of Saturn and absorption features associated with Titan and Rhea, and compares these observations with Pioneer 11 data of a year earlier. The trapped proton fluxes had soft spectra, represented by power laws E^–γ in kinetic energy E, with γ ∼ 7 in the outer magnetosphere and γ ∼ 9 in the magnetotail. Structure associated with the magnetotial was observed as close as 10 Saturn radii (Rs) on the outbound trajectory. The proton and electron fluxes in the outer magnetosphere and in the magnetotail were variable and appeared to respond to changes in interplanetary conditions. Protons with energies ≥ 2 million electron volts had free access to the magnetosphere from interplanetary space and were not stably trapped outside ∼ 7.5 Rs.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle
Cummings, A. C.0000-0002-3840-7696
Stone, E. C.0000-0002-2010-5462
Additional Information:© 1981 American Association for the Advancement of Science. Received for publication 9 February 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, N. Gehrels, and I. Matus (Caltech), W. Davis, H. Domchick, and D. Stilwell (Goddard), and E. Franzgrote (Jet Propulsion Laboratory). Supported by NASA under NAS7-100 and NGR 05-002-160.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1981-01
Issue or Number:4491
Record Number:CaltechAUTHORS:20140205-155430624
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Official Citation:Energetic Charged Particles in Saturn's Magnetosphere: Voyager 1 Results R. E. Vogt, D. L. Chenette, A. C. Cummings, T. L. Garrard, E. C. Stone, A. W. Schardt, J. H. Trainor, N. Lal and F. B. McDonald Science , New Series, Vol. 212, No. 4491 (Apr. 10, 1981) , pp. 231-234 Published by: American Association for the Advancement of Science Article Stable URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43680
Deposited On:06 Feb 2014 15:35
Last Modified:10 Nov 2021 16:41

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