Satellite sputtering in Sahurn's magnetosphere

被引：45
作者：
Jurac, S
Johnson, RE
Richardson, JD
Paranicas, C
机构：
[1] MIT, Cambridge, MA 02139 USA
[2] Univ Virginia, Charlottesville, VA 22903 USA
[3] Appl Phys Lab, Laurel, MD 20723 USA
来源：
PLANETARY AND SPACE SCIENCE | 2001年 / 49卷 / 3-4期
基金：
美国国家科学基金会; 美国国家航空航天局;
关键词：
D O I：
10.1016/S0032-0633(00)00153-7
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The heavy ion plasma and energetic particles continuously sputter the surfaces of the icy satellites embedded in the inner Saturnian magnetosphere. We evaluate satellite sputtering and compare the resulting H(2)O source distribution with the source distribution expected for the OH cloud recently observed by Hubble Space Telescope. At each satellite we combine, for the first time, the data from the Plasma Science (PLS) and Low Energy Charged-Particle (LECP) instruments from Voyager 1 and 2, unifying them into a single plasma distribution function. Based on the calculated satellite sources, we conclude that sputtering of the satellite surfaces cannot produce the observed OH cloud and that a large additional source in the inner magnetosphere is needed to fully explain the HST observations. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：319 / 326
页数：8
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