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DOI | 10.1002/2017GL073090 |
Short-term observations of double-peaked Na emission from Mercury's exosphere | |
Massetti, S.1; Mangano, V.1; Milillo, A.1; Mura, A.1; Orsini, S.1; Plainaki, C.2 | |
2017-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy |
英文摘要 | We report the analysis of short-term ground-based observations of the exospheric Na emission (D1 and D2 lines) from Mercury, which was characterized by two high-latitude peaks confined near the magnetospheric cusp footprints. During a series of scheduled observations from the Telescope Heliographique pour l'Etude du Magnetisme et des Instabilites Solaires (THEMIS) telescope, achieved by scanning the whole planet, we implemented a series of extra measurements by recording the Na emission from a narrow north-south strip only, centered above the two emission peaks. Our aim was to inspect the existence of short-term variations, which were never analyzed before from ground-based observations, and their possible correlation with interplanetary magnetic field variations. Though Mercury possesses a miniature magnetosphere, characterized by fast reconnection events that develop on a timescale of few minutes, ground-based observations show that the exospheric Na emission pattern can be globally stable for a prolonged period (some days) and also exhibits fluctuations in the time range of tens of minutes. |
英文关键词 | exosphere planetary magnetospheres cusps IMF solar wind ion precipitation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400186500001 |
WOS关键词 | SOLAR-WIND ; MESSENGER OBSERVATIONS ; SODIUM EXOSPHERE ; DAYSIDE MAGNETOSPHERE ; SPATIAL-DISTRIBUTION ; MAGNETIC-FIELD ; MODEL ; MAGNETOPAUSE ; COMPONENT ; SURFACE |
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/26810 |
专题 | 气候变化 |
作者单位 | 1.INAF IAPS, Inst Space Astrophys & Planetol, Rome, Italy; 2.ASI, Italian Space Agcy, Rome, Italy |
推荐引用方式 GB/T 7714 | Massetti, S.,Mangano, V.,Milillo, A.,et al. Short-term observations of double-peaked Na emission from Mercury's exosphere[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(7). |
APA | Massetti, S.,Mangano, V.,Milillo, A.,Mura, A.,Orsini, S.,&Plainaki, C..(2017).Short-term observations of double-peaked Na emission from Mercury's exosphere.GEOPHYSICAL RESEARCH LETTERS,44(7). |
MLA | Massetti, S.,et al."Short-term observations of double-peaked Na emission from Mercury's exosphere".GEOPHYSICAL RESEARCH LETTERS 44.7(2017). |
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