Large-scale structure of Saturn's E-ring
Large-scale structure of Saturn's E-ring
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DOI：
10.1029/2007gl032726
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发表时间：
2008-02-28
影响因子：
5.2
通讯作者：
Morfill, Gregor E.
中科院分区：
文献类型：
--
作者：
Horanyi, Mihaly;Juhasz, Antal;Morfill, Gregor E.
最近发现的地质活跃的土卫二南极地区的间歇泉现在被认为是土星E环物质的主要来源。传统上认为土星环的范围在3到8 R-S之间，其中R-S是土星的半径。然而，新的现场尘埃测量表明，小颗粒的密度可能会不断地远远超出这些边界，E环甚至可能超出泰坦的轨道（20.3 R-S）。我们报告的尘埃颗粒组成的E环的长期演变的模拟结果表明，从土卫二的颗粒确实可以达到土星的磁层的郊区。
Geysers on the recently discovered, geologically active south-polar region of the moon Enceladus are now recognized as the dominant source of material in Saturn's E ring. The ring was traditionally thought to span the region between 3 to 8 R-S, where R-S is the radius of Saturn. However, new in situ dust measurements indicate that the density of small grains might continuously extend far beyond these boundaries, and the E ring could reach even beyond the orbit of Titan (20.3 R-S). We report on the modeling results of the long-term evolution of dust particles comprising the E ring to show that grains from Enceladus could indeed reach the outskirts of Saturn's magnetosphere.