Zobrazeno 1 - 10 of 111 pro vyhledávání: '"D.-D. Niu"'
3
Hydrogen and helium escape on Venus via energy transfer from hot oxygen atoms
Autor: Jun Cui, D.-D. Niu, Jiang Yu, H. Gu
Publikováno v: Monthly Notices of the Royal Astronomical Society. 501:2394-2402
Due to the relatively strong gravity on Venus, heavy atmospheric neutrals are difficult to accelerate to the escape velocity. However, a variety of processes, such as the dissociative recombination of ionospheric O$_2^+$, are able to produce hot atom
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::966eba62492e290b65f62acdea8329ba
https://doi.org/10.1093/mnras/staa3744
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4
Observation of CO2++ dication in the dayside Martian upper atmosphere
Autor: Yongqiang Hao, Yong Wei, XiaoShu Wu, JianPing Huang, LongKang Dai, D.-D. Niu, H. Gu, Jun Cui
Publikováno v: Earth and Planetary Physics. 4:1-7
Doubly charged positive ions (dications) are an important component of planetary ionospheres because of the large energy required for their formation. Observations of these ions are exceptionally difficult due to their low abundances; until now, only
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ad45ddc380a5f18272b491fa132642c4
https://doi.org/10.26464/epp2020036
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7
Is Solar Wind electron precipitation a source of neutral heating in the nightside Martian upper atmosphere?
Autor: XiaoShu Wu, Jun Cui, LongKang Dai, YuTian Cao, H. R. Lai, H. Gu, D.-D. Niu
Publikováno v: Earth and Planetary Physics.
Solar Wind (SW) electron precipitation is able to deposit a substantial amount of energy in the nightside Martian upper atmosphere, potentially exerting an influence on its thermal structure. This study serves as the first investigation of such an is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a0e92579bd67bca70c0a14904b2d8042
https://doi.org/10.26464/epp2021012
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8
Solar and Magnetic Control of Minor Ion Peaks in the Dayside Martian Ionosphere
Autor: Xutong Wu, Yong Wei, D.-D. Niu, Juan Huang, Yongqiang Hao, Jianping Guo, Jun Cui
Publikováno v: Journal of Geophysical Research: Space Physics. 125
The Neutral Gas and Ion Mass Spectrometer of the Mars Atmosphere and Volatile Evolution provides a large data set to explore the ion composition and structure of the Martian ionosphere. Here the da...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30e84778d37a37b8108922df90b318a3
https://doi.org/10.1029/2020ja028254
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9
Energetic Electron Depletions in the Nightside Martian Upper Atmosphere Revisited
Autor: Lihui Chai, S.-Q. Wu, H. Gu, D.-D. Niu, Xutong Wu, Yong Wei, Haoyu Lu, Jun Cui
Publikováno v: Journal of Geophysical Research: Space Physics. 125
Energetic electron depletions are a notable feature of the nightside Martian upper atmosphere. In this study, we investigate systematically the variations of the occurrence of depletions with both ...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db68d39abe5369614201de17263f5374
https://doi.org/10.1029/2019ja027670
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10
Dayside nitrogen and carbon escape on Titan: the role of exothermic chemistry
Autor: F. He, Jun Cui, D.-D. Niu, Panayotis Lavvas, Yong Wei, H. Gu, XiaoShu Wu, J. H. Guo
Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 633, pp.A8. ⟨10.1051/0004-6361/201936826⟩
Context. Atmospheric escape has an appreciable impact on the long-term climate evolution on terrestrial planets. Exothermic chemistry serves as an important mechanism driving atmospheric escape and the role of such a mechanism is of great interest fo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7579a754c232add162f64c8ab1cb74a
https://hal.archives-ouvertes.fr/hal-03038417
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