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physics.space-ph2024
Dependence of the Solar Wind Plasma Density on Moderate- and Extremely High-Geomagnetic Activity Elucidated by Potential Learning
Ryozo Kitajima, Motoharu Nowada, Ryotaro Kamimura
The relationship between moderate and extremely high levels of geomagnetic activity, represented by the Kp index (2- to 5+ and 6- to 9), and solar wind conditions during southward…
physics.space-ph2024
Contemporaneous Appearances of Auroral Spiral and Transpolar Arc: Polar UVI Observations and Global MHD Simulations
Motoharu Nowada, Yukinaga Miyashita, Aoi Nakamizo +2
A local vortex-structured aurora and a large-scale transpolar arc (TPA) were contemporaneously observed by the Polar ultraviolet imager (UVI) during the late recovery phase of a su…