Publication Date:
1996-10-18
Description:
Intense, magnetic field-aligned, bidirectional, energetic (〉15 kiloelectron volts) electron beams were discovered by the Galileo energetic particles detector during the flyby of Io. These beams can carry sufficient energy flux into Jupiter's atmosphere to produce a visible aurora at the footprint of the magnetic flux tube connecting Io to Jupiter. Composition measurements through the torus showed that the spatial distributions of protons, oxygen, and sulfur are different, with sulfur being the dominant energetic (〉 approximately 10 kiloelectron volts per nucleon) ion at closest approach.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, D J -- Mauk, B H -- McEntire, R E -- Roelof, E C -- Armstrong, T P -- Wilken, B -- Roederer, J G -- Krimigis, S M -- Fritz, T A -- Lanzerotti, L J -- New York, N.Y. -- Science. 1996 Oct 18;274(5286):401-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Johns Hopkins Applied Physics Laboratory, Johns Hopkins Road, Laurel, MD 20723, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8832885" target="_blank"〉PubMed〈/a〉
Keywords:
Electrons
;
Extraterrestrial Environment
;
*Ions
;
*Jupiter
;
Magnetics
;
Oxygen/analysis
;
Protons
;
Sulfur/analysis
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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