气候变化领域集成服务门户(CCPortal): Modeling of cometary x-rays caused by solar wind minor ions

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DOI	10.1126/science.276.5314.939
	Modeling of cometary x-rays caused by solar wind minor ions
	Häberli R.M.; Gombosi T.I.; De Zeeuw D.L.; Combi M.R.; Powell K.G.
发表日期	1997
ISSN	0036-8075
起始页码	939
结束页码	942
卷号	276 期号:5314
英文摘要	X-ray emission was discovered in comet Hyakutake (C/1996 B2) by the Rontgen satellite in 1996, and these emissions were attributed to the excitation of high charge state solar wind ions due to electron capture from cometary molecules or atoms. Using the plasma flow in the coma of Hyakutake calculated by a three-dimensional adaptive magnetohydrodynamic model, the density distribution of solar wind ions in the coma and the resulting x-ray emission were computed. The calculated High Resolution Imager count rate of 4.4 per second and the spatial distribution of the x-ray emission agree with the observations. A detailed energy spectrum of cometary x-rays is predicted in the 80 to 2000 electronvolt energy range. Cometary x-rays present a sensitive tool to monitor cometary activity and solar wind ion composition.
英文关键词	article; astronomy; priority journal; radiation; radiation detection; X ray; Carbon; Computer Simulation; Extraterrestrial Environment; Hydrogen; Ions; Meteoroids; Neon; Oxygen; X-Rays
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243906
作者单位	Space Physics Research Laboratory, University of Michigan, Ann Arbor, MI 48109-2143, United States; Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109-2143, United States
推荐引用方式 GB/T 7714	Häberli R.M.,Gombosi T.I.,De Zeeuw D.L.,et al. Modeling of cometary x-rays caused by solar wind minor ions[J],1997,276(5314).
APA	Häberli R.M.,Gombosi T.I.,De Zeeuw D.L.,Combi M.R.,&Powell K.G..(1997).Modeling of cometary x-rays caused by solar wind minor ions.Science,276(5314).
MLA	Häberli R.M.,et al."Modeling of cometary x-rays caused by solar wind minor ions".Science 276.5314(1997).