Year-end Sale % OFF 
Abstract
AbstractPoleward moving auroral forms (PMAFs), the most common dayside auroral structure, images the process of energy and particle transport from the solar wind to the magnetosphere via magnetic reconnection. This form of aurora moves not only poleward, but also in the azimuthal (dawn‐dusk) direction. However, the underlying mechanism responsible for the azimuthal motion of PMAFs are not thoroughly investigated. Here based on all‐sky imager observations in the southern hemisphere, we statistically determine that the azimuthal motion of PMAFs is highly dependent on the dawn‐dusk component of the interplanetary magnetic field (IMF By). Using three‐dimensional (3‐D) global hybrid simulations, we demonstrate that IMF By controls the azimuthal motion of PMAFs through plasma flow derived from magnetic tension of magnetopause flux ropes. Our study, by focusing on the azimuthal motion of PMAFs, allows a better understanding of space weather, especially from a 3‐D perspective.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
