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DOI | 10.1029/2019GL084121 |
In Situ Electron Density From Active Sounding: The Influence of the Spacecraft Wake | |
Akbari, H.1; Andersson, L.1; Andrews, D. J.2; Malaspina, D.1; Benna, M.3; Ergun, R.1 | |
2019-09-06 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA; Sweden |
英文摘要 | Results obtained in the Martian ionosphere by the Langmuir Probe and Waves instrument aboard the Mars Atmosphere and Volatile EvolutioN Mission spacecraft are presented. The results include ionospheric electron densities determined from the frequency of Langmuir waves. Since the amplitude of thermal Langmuir waves is often below the instrument's detection level, Langmuir Probe and Waves excites these waves by injecting into the plasma a 3.3-V white noise signal. Electric field spectral measurements obtained shortly after the excitation show a resonance line at frequencies slightly below the local plasma frequency. The observed resonance line is interpreted to originate from plasma waves excited in the wake behind the spacecraft. These results reveal an important phenomenon in electron density estimation from stimulated Langmuir waves. The observed phenomenon, not previously reported by earlier missions, may be a common process in active sounding that can affect in situ electron density measurements. |
英文关键词 | Langmuir probe in situ electron density relaxation sounding Martian ionosphere satellite wake |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000485376800001 |
WOS关键词 | FIELD MEASUREMENTS ; PROBE MEASUREMENTS ; PLASMA RESONANCES ; RAY TRAJECTORIES ; MAGNETOSPHERE ; ANTENNAS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/186951 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA; 2.Swedish Inst Space Phys, Uppsala, Sweden; 3.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | Akbari, H.,Andersson, L.,Andrews, D. J.,et al. In Situ Electron Density From Active Sounding: The Influence of the Spacecraft Wake[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Akbari, H.,Andersson, L.,Andrews, D. J.,Malaspina, D.,Benna, M.,&Ergun, R..(2019).In Situ Electron Density From Active Sounding: The Influence of the Spacecraft Wake.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Akbari, H.,et al."In Situ Electron Density From Active Sounding: The Influence of the Spacecraft Wake".GEOPHYSICAL RESEARCH LETTERS (2019). |
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