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首页> 外文期刊>Earth, planets and space: EPS >Latitudinal dependence of the solar wind density derived from remote sensing measurements using interplanetary Lyman α emission from 1999 to 2002
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Latitudinal dependence of the solar wind density derived from remote sensing measurements using interplanetary Lyman α emission from 1999 to 2002

机译：使用1999年至2002年使用行星际莱曼α辐射进行遥感测量得出的太阳风密度的纬度依赖性

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The interplanetary Lyman α backscattered emission is an effective tool for remote sensing of the global structure of the solar wind proton flux. This paper reports an attempt to derive the latitudinal dependence of the solar wind density by combining the interplanetary Lyman α measurements of the Nozomi spacecraft for the period 1999-2002 with the solar wind speed data derived from interplanetary scintillation measurements. This approach successfully revealed the slow and dense solar wind over the poles during the period of the solar maximum. Data on the polar solar wind density indicate a significant growth from the middle of 2000, and the polar values of solar wind density are close to those of the equatorial values as a result of the disappearance of the coronal hole. A marked density depletion occurred in the middle of 2001, which can be ascribed to the development of fast winds from the polar coronal hole. To evaluate the remote sensing method, we considered solar wind density data from in situ measurements obtained by the Ulysses spacecraft. We conclude that our method basically agrees with in situ measurements, although we found a significant (a factor of 2) difference between these in the middle of 2001.
机译：行星际Lymanα背向散射发射是一种用于遥感太阳风质子通量整体结构的有效工具。本文报道了通过结合1999-2002年Nozomi航天器的行星际Lymanα测量值和从行星际闪烁测量值得出的太阳风速数据来推导太阳风密度的纬度依赖性的尝试。这种方法成功地揭示了在太阳最大期间，两极上缓慢而密集的太阳风。关于极地太阳风密度的数据表明，自2000年中期以来，太阳风密度的极值有了显着增长，由于日冕洞的消失，太阳风密度的极值接近赤道值。 2001年中期出现了明显的密度枯竭，这可以归因于极地冠状孔快速风的发展。为了评估遥感方法，我们考虑了由尤利西斯号航天器获得的原位测量数据得出的太阳风密度数据。我们得出的结论是，尽管我们在2001年中期发现两者之间存在显着差异（2倍），但我们的方法基本上与现场测量结果吻合。

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