Neutral density response to solar flares at Mars
Neutral density response to solar flares at Mars
复制标题
火星太阳耀斑的中性密度响应
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
B. Jakosky
中科院分区：
文献类型：
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作者：
E. Thiemann;F. Eparvier;L. Andersson;C. Fowler;W.K. (Bill) Peterson;P. Mahaffy;S. England;D. Larson;D. Lo;N. Schneider;J. Deighan;W. McClintock;B. Jakosky
这项研究首次直接观测到太阳耀斑对火星中性大气的加热。使用火星大气和挥发物演化（MAVEN）航天器上的极紫外监测器检测到太阳耀斑，并通过MAVEN上的中性气体和离子质谱仪产生的氩（Ar）密度标度高度的变化来确定高层大气温度的增强。我们分析了 MAVEN 任务早期发生的 14 次 M 级或更大的耀斑，以及 2015 年 5 月期间 30 天的高耀斑活动。我们报告说，火星白天的高层大气在耀斑软 X 射线峰值附近显示出明显的加热；它对 M 级或更大耀斑的加热做出快速响应并恢复。此外，我们还展示了在两个耀斑的软 X 射线峰值附近拍摄的大气密度与高度的关系曲线。
First direct observations of heating of the Mars neutral atmosphere by solar flares are presented in this study. Solar flares were detected using the Extreme Ultraviolet Monitor on board the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft, and upper atmospheric temperature enhancements were determined by changes in the density scale height of Argon (Ar) made by the Neutral Gas and Ion Mass Spectrometer also on board MAVEN. We analyzed 14 M‐class or greater flares that occurred during the early part of the MAVEN mission in addition to a 30 day period of high flare activity during May 2015. We report that the Mars dayside upper atmosphere shows significant heating near the flare soft X‐ray peak; and it responds and recovers rapidly to heating from M‐class or larger flares. In addition, we present atmospheric density versus altitude profiles that were taken near the soft X‐ray peak of two flares.
影响因子：
5.2
作者：
A. Medvedev;Erdal Yiğit
通讯作者：
A. Medvedev;Erdal Yiğit