显式IMF $B_y$ -在亚极光纬度的效应最大化（献给Eigil Friis-Christensen）
Explicit IMF $B_y$-effect maximizes at subauroral latitudes (Dedicated to the memory of Eigil Friis-Christensen)
摘要：
太阳风和地磁活动之间的耦合中最重要的参数是行星际磁场（IMF）的$B_z$分量。然而，最近的研究表明，IMF $B_y$是地磁活动的一个额外的、独立的驱动因素。在这里，我们使用当地的地磁指数从一个大型网络的磁站研究如何国际货币基金组织$B_y$影响地磁活动在不同纬度的所有太阳风，并分别在日冕物质抛射（CME）。我们发现，地磁活动，所有的太阳风，是20%强$B_y>0$比$B_y<0$在极光下的纬度约$60^{\circ}$校正地磁（CGM）纬度。在日冕物质抛射期间，$B_y$ -效应在略低的纬度（约为$57^{\circ}$（CGM）纬度）较大，约为40%。这些结果突出了国际货币基金组织$B_y$成分对不同纬度空间气象的重要性，在空间气象建模中必须加以考虑。
英文摘要：
The most important parameter in the coupling between solar wind and geomagnetic activity is the $B_z$-component of the interplanetary magnetic field (IMF). However, recent studies have shown that IMF $B_y$ is an additional, independent driver of geomagnetic activity. We use here local geomagnetic indices from a large network of magnetic stations to study how IMF $B_y$ affects geomagnetic activity at different latitudes for all solar wind and, separately during coronal mass ejections (CMEs). We show that geomagnetic activity, for all solar wind, is 20% stronger for $B_y>0$ than for $B_y<0$ at subauroral latitudes of about $60^{\circ}$ corrected geomagnetic (CGM) latitude. During CMEs, the $B_y$-effect is larger, about 40%, at slightly lower latitudes of about $57^{\circ}$ (CGM) latitude. These results highlight the importance of the IMF $B_y$-component for space weather at different latitudes and must be taken into account in space weather modeling.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
