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  4. 中国科学院地球与行星物理重点实验室
In Situ Heating of the Nightside Martian Upper Atmosphere and Ionosphere: The Role of Solar Wind Electron Precipitation

文献类型：期刊论文

作者Niu, D. -D.4; Cui, J.1,5,6; Gu, H.5; Wu, X. -S.1,5; Cao, Y. -T.5; Dai, L. - K.5; Wu, M. -Y.4; Zhang, T. -L.3,4; Rong, Z. -J.2; Wei, Y.2
刊名ASTROPHYSICAL JOURNAL
出版日期2021-03-01
卷号909期号:2页码:19
ISSN号0004-637X
关键词Planetary atmospheres Mars
DOI10.3847/1538-4357/abdbb0
英文摘要In the absence of solar radiation, precipitating electrons from the solar wind (SW) are generally thought to be the dominant source of energy deposition in the nightside Martian upper atmosphere, creating a patchy ionosphere and possibly also affecting the nightside thermal budget of various neutral and ionized species. Previous model calculations have not taken into account in situ heating via SW electron impact. In the present study, we utilize extensive measurements made by several instruments on board the Mars Atmosphere and Volatile Evolution spacecraft, in order to perform data-driven computations of the nightside neutral, ion, and electron heating rates. Considering the large range of energetic electron intensity observed on the nightside of Mars, we divide the entire data set into two subsamples, either with or without energetic electron depletion, a notable feature of the nightside Martian ionosphere. Our calculations indicate that in situ nightside neutral heating is dominated by exothermic chemistry and Maxwell interaction with thermal ions for regions with depletion, and by direct SW impact for regions without. Collisional quenching of excited state species produced from a variety of channels, such as electron impact excitation, dissociation, and ionization, as well as O-2(+) dissociative recombination, makes a substantial contribution to neutral heating, except during depletion. For comparison, nightside ion heating is mainly driven by energetic ion production under all circumstances, which occurs mainly via ion-neutral reaction O+ + CO2 and CO2+ predissociation.
WOS关键词CRUSTAL MAGNETIC-FIELD ; MARS GLOBAL SURVEYOR ; CROSS-SECTIONS ; PLANETARY-ATMOSPHERES ; IMPACT DISSOCIATION ; DAYSIDE IONOSPHERE ; ENERGY DEPOSITION ; CYCLE VARIATION ; ION ; IONIZATION
资助项目B-type Strategic Priority Program - Chinese Academy of Sciences (CAS)[XDB41000000] ; pre-research project on Civil Aerospace Technologies - China's National Space Administration[D020105] ; National Natural Science Foundation of China[42030201] ; National Natural Science Foundation of China[41774186] ; National Natural Science Foundation of China[41904154] ; National Natural Science Foundation of China[41774167] ; CAS Institute of Geology Geophysics[IGGCAS-201904]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000627306600001
资助机构B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; pre-research project on Civil Aerospace Technologies - China's National Space Administration ; National Natural Science Foundation of China ; CAS Institute of Geology Geophysics ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; pre-research project on Civil Aerospace Technologies - China's National Space Administration ; National Natural Science Foundation of China ; CAS Institute of Geology Geophysics ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; pre-research project on Civil Aerospace Technologies - China's National Space Administration ; National Natural Science Foundation of China ; CAS Institute of Geology Geophysics ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; pre-research project on Civil Aerospace Technologies - China's National Space Administration ; National Natural Science Foundation of China ; CAS Institute of Geology Geophysics
源URL[http://ir.iggcas.ac.cn/handle/132A11/98785]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Cui, J.
作者单位1.Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
3.Austrian Acad Sci, Space Res Inst, Graz, Austria
4.Harbin Inst Technol, Inst Space Sci & Appl Technol, Shenzhen, Guangdong, Peoples R China
5.Sun Yat Sen Univ, Sch Atmospher Sci, Planetary Environm & Astrobiol Res Lab PEARL, Zhuhai, Guangdong, Peoples R China
6.Chinese Acad Sci, Key Lab Lunar & Deep Space Explorat, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Niu, D. -D.,Cui, J.,Gu, H.,et al. In Situ Heating of the Nightside Martian Upper Atmosphere and Ionosphere: The Role of Solar Wind Electron Precipitation[J]. ASTROPHYSICAL JOURNAL,2021,909(2):19.
APA Niu, D. -D..,Cui, J..,Gu, H..,Wu, X. -S..,Cao, Y. -T..,...&Wei, Y..(2021).In Situ Heating of the Nightside Martian Upper Atmosphere and Ionosphere: The Role of Solar Wind Electron Precipitation.ASTROPHYSICAL JOURNAL,909(2),19.
MLA Niu, D. -D.,et al."In Situ Heating of the Nightside Martian Upper Atmosphere and Ionosphere: The Role of Solar Wind Electron Precipitation".ASTROPHYSICAL JOURNAL 909.2(2021):19.

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来源：地质与地球物理研究所

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