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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Effect of the planet shine on the corona: Application to the Martian hot oxygen
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Effect of the planet shine on the corona: Application to the Martian hot oxygen

机译：地球照电晕的影响:应用热氧火星

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摘要

Systematic observations of the Martian hot oxygen corona by Imaging Ultraviolet Spectrograph on Mars Atmosphere and Volatile and EvolutioN can be used to constrain estimates of the current neutral oxygen escape rate. In this paper, we investigate the effect of the photons emitted from the thermosphere and lower exosphere on the emissivity of the hot oxygen corona at 130.4 nm. We compare this source of illumination, generally neglected, to the direct solar illumination used to convert theOI 130.4 triplet brightness into line-of-sight column density. This study is performed using a radiative transfer model with two Maxwellian oxygen populations, assuming spherical symmetry for the cold and hot oxygen densities. Contribution to the corona from the illumination of the exosphere by the sunlit atmosphere depends on the amount of cold oxygen and varies with altitude and solar zenith angle. An analytic formulation to take into account variations of this effect with respect to the hot oxygen kinetic temperature is proposed. The effect of the atmosphere sunlit should be general and occur on other planets for other very optically thick resonance lines.
机译：系统的观测火星热氧电晕的成像紫外光谱仪火星大气与挥发物和演化用于限制目前的估计中性氧气逃逸率。光子发射的影响进行调查从热电离层和较低的外逸层发射率的热氧电晕在130.4海里。我们比较这照明源,一般被忽视,直接太阳能照明使用theOI 130.4三联体亮度转换成视线列密度。使用辐射传输模型和执行两个麦克斯韦氧气的数量,假设球对称的冷和热氧密度。阳光照明的外逸层大气取决于的冷量的氧气和随高度和太阳天顶角。考虑的解析公式关于热变化的影响提出了氧动力学温度。影响大气的阳光应该一般并为其他发生在其他行星光学厚的共振线。

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