Evaluating Local Ionization Balance in the Nightside Martian Upper Atmosphere during MAVEN Deep Dip Campaigns
文献类型:期刊论文
作者 | Cui, J.1,2,3; Cao, Y-T2; Wu, X-S2,3; Xu, S-S4; Yelle, R., V5; Stone, S.5; Vigren, E.6; Edberg, N. J. T.6; Shen, C-L3,7; He, F.8 |
刊名 | ASTROPHYSICAL JOURNAL LETTERS
![]() |
出版日期 | 2019-05-01 |
卷号 | 876期号:1页码:5 |
关键词 | planets and satellites: atmospheres planets and satellites: individual (Mars) |
ISSN号 | 2041-8205 |
DOI | 10.3847/2041-8213/ab1b34 |
英文摘要 | Combining the Mars Atmosphere and Volatile Evolution (MAVEN) measurements of atmospheric neutral and ion densities, electron temperature, and energetic electron intensity, we perform the first quantitative evaluation of local ionization balance in the nightside Martian upper atmosphere, a condition with the electron impact ionization (EI) of CO2 exactly balanced by the dissociative recombination (DR) of ambient ions. The data accumulated during two MAVEN Deep Dip (DD) campaigns are included: DD6 on the deep nightside with a periapsis solar zenith angle (SZA) of 165 degrees, and DD3 close to the dawn terminator with a periapsis SZA of 110 degrees. With the electron temperatures at low altitudes corrected for an instrumental effect pertaining to the MAVEN Langmuir Probe and Waves, a statistical agreement between the EI and DR rates is suggested by the data below 140 km during DD6 and below 180 km during DD3, implying that electron precipitation is responsible for the nightside Martian ionosphere under these circumstances and extra sources are not required. In contrast, a substantial enhancement in EI over DR is observed at higher altitudes during both campaigns, which we interpret as a signature of plasma escape down the tail. |
WOS关键词 | ELECTRON TEMPERATURES ; MARS EXPRESS ; ION ESCAPE ; IONOSPHERE |
资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA17010201] ; National Science Foundation of China[41525015] ; National Science Foundation of China[41774186] ; National Science Foundation of China[41525016] ; National Aeronautics and Space Administration ; Swedish National Space Agency[135/13] ; Swedish National Space Agency[166/14] ; Swedish Research Council[621-2013-4191] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
WOS记录号 | WOS:000466902900002 |
出版者 | IOP PUBLISHING LTD |
资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; Swedish National Space Agency ; Swedish National Space Agency ; Swedish Research Council ; Swedish Research Council ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; Swedish National Space Agency ; Swedish National Space Agency ; Swedish Research Council ; Swedish Research Council ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; Swedish National Space Agency ; Swedish National Space Agency ; Swedish Research Council ; Swedish Research Council ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; Swedish National Space Agency ; Swedish National Space Agency ; Swedish Research Council ; Swedish Research Council |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/91383] ![]() |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Cui, J. |
作者单位 | 1.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai, Guangdong, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Lunar & Deep Space Explorat, Beijing, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei, Anhui, Peoples R China 4.Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA 5.Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA 6.Swedish Inst Space Phys, Uppsala, Sweden 7.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Anhui, Peoples R China 8.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Cui, J.,Cao, Y-T,Wu, X-S,et al. Evaluating Local Ionization Balance in the Nightside Martian Upper Atmosphere during MAVEN Deep Dip Campaigns[J]. ASTROPHYSICAL JOURNAL LETTERS,2019,876(1):5. |
APA | Cui, J..,Cao, Y-T.,Wu, X-S.,Xu, S-S.,Yelle, R., V.,...&Wei, Y..(2019).Evaluating Local Ionization Balance in the Nightside Martian Upper Atmosphere during MAVEN Deep Dip Campaigns.ASTROPHYSICAL JOURNAL LETTERS,876(1),5. |
MLA | Cui, J.,et al."Evaluating Local Ionization Balance in the Nightside Martian Upper Atmosphere during MAVEN Deep Dip Campaigns".ASTROPHYSICAL JOURNAL LETTERS 876.1(2019):5. |
入库方式: OAI收割
来源:地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。