Abstract
Global images of the Earth's inner magnetosphere and its response to the coronal mass ejection (CME) on the 15 July 2000 were obtained by the IMAGE spacecraft. The images were taken in energetic neutral atoms (ENA) by the High-Energy Neutral Atom (HENA) imager. ENAs are produced by charge exchange between the hot ion population of the magnetosphere and the cold neutral hydrogen geocorona. The ENA images show how plasma is injected into the nightside magnetosphere as the interplanetary magnetic field (IMF) turns strongly southward. As the IMF B z increases and the storm intensity decreases, the ENA images show that the ring current becomes closed and symmetric as IMF B z reaches positive values.
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Brandt, P.C.S., Mitchell, D., Roelof, E. et al. Bastille Day storm: Global response of the terrestrial ring current. Sol Phys 204, 377–386 (2001). https://doi.org/10.1023/A:1014286728053
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DOI: https://doi.org/10.1023/A:1014286728053