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The dust halo of Saturn's largest icy moon, Rhea
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2008 (English)In: Science, ISSN 0036-8075, Vol. 319, no 5868, 1380-1384 p.Article in journal (Refereed) Published
Abstract [en]

Saturn's moon Rhea had been considered massive enough to retain a thin, externally generated atmosphere capable of locally affecting Saturn's magnetosphere. The Cassini spacecraft's in situ observations reveal that energetic electrons are depleted in the moon's vicinity. The absence of a substantial exosphere implies that Rhea's magnetospheric interaction region, rather than being exclusively induced by sputtered gas and its products, likely contains solid material that can absorb magnetospheric particles. Combined observations from several instruments suggest that this material is in the form of grains and boulders up to several decimetres in size and orbits Rhea as an equatorial debris disk. Within this disk may reside denser, discrete rings or arcs of material.

Place, publisher, year, edition, pages
2008. Vol. 319, no 5868, 1380-1384 p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-149886DOI: 10.1126/science.1151524ISI: 000253712900041OAI: oai:DiVA.org:uu-149886DiVA: diva2:405888
Available from: 2011-03-24 Created: 2011-03-24 Last updated: 2011-03-24Bibliographically approved

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Swedish Institute of Space Physics, Uppsala Division
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