Laboratory simulation of charge exchange-produced x-ray emission from comets

被引：162
|
作者：
Beiersdorfer, P
Boyce, KR
Brown, GV
Chen, H
Kahn, SM
Kelley, RL
May, M
Olson, RE
Porter, FS
Stahle, CK
Tillotson, WA
机构：
[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[3] Columbia Univ, Dept Phys, New York, NY 10027 USA
[4] Univ Missouri, Dept Phys, Rolla, MO 65409 USA
来源：
SCIENCE | 2003年 / 300卷 / 5625期
关键词：
D O I：
10.1126/science.1084373
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In laboratory experiments using the engineering spare microcalorimeter detector from the ASTRO-E satellite mission, we recorded the x-ray emission of highly charged ions of carbon, nitrogen, and oxygen, which simulates charge exchange reactions between heavy ions in the solar wind and neutral gases in cometary comae. The spectra are complex and do not readily match predictions. We developed a charge exchange emission model that successfully reproduces the soft x-ray spectrum of comet Linear C/1999 S4, observed with the Chandra X-ray Observatory.
引用
收藏
页码：1558 / 1559
页数：2
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