Modeling an enhancement of the lunar sodium tail during the Leonid Meteor Shower of 1998

Modeling an enhancement of the lunar sodium tail during the Leonid Meteor Shower of 1998
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模拟 1998 年狮子座流星雨期间月球钠尾的增强

DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
M. Mendillo
M. Mendillo
中科院分区:
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文献类型:
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作者:
Jody K. Wilson;Steven M. Smith;J. Baumgardner;M. Mendillo

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在1998年11月18日至20日的夜晚,在天空中看到一个非地球的钠排放区域,被解释为月球遥远的钠尾,可能是由于狮子座流星雨的微流星撞击蒸发了月球的风化层。我们表明,该斑点的位置和形态可以用月球钠大气的标准稳态模型来解释。此外,使用新的月球大气随时间变化的模拟,我们发现,在1998年11月16日和17日狮子座流星雨最强烈的时期,月球的Na逃逸率增加到正常水平的2到3倍。
A region of non‐terrestrial sodium emission seen in the sky on the nights of November 18–20, 1998, has been interpreted as the Moon's distant sodium tail, possibly enhanced by micrometeor impact vaporization of the lunar regolith by the Leonid meteor shower. We show that the location and morphology of the spot can be explained by standard steady‐state models of the Moon's sodium atmosphere. Moreover, using a new time‐dependent simulation of the lunar atmosphere, we find that the Na escape rate from the Moon increased to 2 or 3 times its normal level during the most intense period of the 1998 Leonid meteor shower on November 16th and 17th.