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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Enhancement of terrestrial diffuse X-ray emission associated with coronal mass ejection and geomagnetic storm
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Enhancement of terrestrial diffuse X-ray emission associated with coronal mass ejection and geomagnetic storm

机译：与日冕物质抛射和地磁风暴有关的地面弥散X射线发射的增强

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We present an analysis of a Suzaku observations taken during the geomagnetic storm of 2005 August 23-24. We found a time variation of diffuse soft X-ray emission when a coronal mass ejection hit Earth and caused a geomagnetic storm. The diffuse emission consisted of fluorescent scattering of solar X-rays and an exospheric solar wind charge exchange. The former is characterized by a neutral oxygen emission line due to strong heating of the upper atmosphere during the storm time, while the latter is dominated by the sum of C V, CVI, NVI, NVII, OVII, andOVIII emission lines due to an enhanced solar wind flux in the vicinity of the exosphere. Using the solar-wind data taken with the ACE andWIND satellites, a time correlation between the solar wind and the strong OVII line flux was investigated. We estimated necessary column densities for the solar X-ray scattering and exospheric SWCX. From these results, we argue that a part of the solar-wind ions enters inside the magnetosphere and causes the SWCX reaction.
机译：我们对2005年8月23日至24日的地磁风暴期间的朱雀观测进行了分析。当日冕物质抛射撞击地球并引起地磁风暴时，我们发现了弥漫性软X射线发射的时间变化。漫射发射包括太阳X射线的荧光散射和大气层外的太阳风电荷交换。前者的特征是在暴风雨期间高空大气强烈加热而产生的中性氧排放线，而后者则是由于日照增强而导致的CV，CVI，NVI，NVII，OVII和OVIII排放线之和占主导地位。气圈附近的风通量。利用ACE和WIND卫星获取的太阳风数据，研究了太阳风和强大的OVII线通量之间的时间相关性。我们估算了太阳X射线散射和大气层SWCX所需的柱密度。根据这些结果，我们认为一部分太阳风离子进入磁层内部并引起SWCX反应。

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