DOI: 10.1002/2015GL063939
论文题名: The rosetta ion and electron sensor (IES) measurement of the development of pickup ions from comet 67P/Churyumov-Gerasimenko
作者: Goldstein R. ; Burch J.L. ; Mokashi P. ; Broiles T. ; Mandt K. ; Hanley J. ; Cravens T. ; Rahmati A. ; Samara M. ; Clark G. ; Hässig M. ; Webster J.M.
刊名: Geophysical Research Letters
ISSN: 0094-8696
EISSN: 1944-8427
出版年: 2015
卷: 42, 期: 9 起始页码: 3093
结束页码: 3099
语种: 英语
英文关键词: comets
; pickup
; plasma
Scopus关键词: Pickups
; Plasmas
; Solar wind
; Thermionic emission
; 67p/churyumov-gerasimenko
; Comets
; Electron sensors
; Negative potential
; Neutral species
; Solar UV radiation
; Solar-wind ions
; Thermal electron
; Ions
; comet
; ion
; ionization
; sensor
; solar wind
英文摘要: The Rosetta Ion and Electron Sensor (IES) has been measuring solar wind ions intermittently since exiting from hibernation in May 2014. On 19 August, when Rosetta was ∼80km from the comet 67P/Churyumov-Gerasimenko, which was ∼3.5AU from the Sun, IES began to see ions at its lowest energy range, ∼4-10eV. We identify these as ions created from neutral species emitted by the comet nucleus, photoionized by solar UV radiation in the neighborhood of the Rosetta spacecraft (S/C), and attracted by the small negative potential of the S/C resulting from the population of thermal electrons. Later, IES began to see higher-energy ions that we identify as having been picked up and accelerated by the solar wind. IES continues to measure changes in the solar wind and the development of the pickup ion structure. Key Points IES observed low-energy ions in August 2014, at an 80km distance from the comet ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930476273&doi=10.1002%2f2015GL063939&partnerID=40&md5=a06e812fef2e5212d5d08ba9d6a9a564
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8312
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Southwest Research Institute, San Antonio, TX, United States
Recommended Citation:
Goldstein R.,Burch J.L.,Mokashi P.,et al. The rosetta ion and electron sensor (IES) measurement of the development of pickup ions from comet 67P/Churyumov-Gerasimenko[J]. Geophysical Research Letters,2015-01-01,42(9).