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Earth's magnetotail variability during supersubstorms (SSSs): A study on solar wind-magnetosphere-ionosphere coupling

Hajra, Rajkumar; Echer, Ezequiel; Franco, Adriane Marques de Souza +1 more

Supersubstorm (SSS) events are associated with extremely intense westward auroral electrojet currents (the minimum SuperMAG AL or SML < - 2500 nT) resulting from the solar wind-magnetosphere coupling. We present, for the first time, variability of the Earth's magnetotail and coupling from the solar wind to magnetotail, geosynchronous orbit and …

Statistical analysis of the relationship between Power spectral density of magnetic turbulence and ion velocity in magnetotail bursty bulk Flows

Du, A. M.; Wu, Q.; Wang, G. Q.

Based on the observation of the THEMIS satellites, we utilize the superposed epoch method to statistically analyze how the p (Power Spectral Density) of compressional and transverse components of the magnetic field is affected by the ion inflow velocity V_⊥ which is the peak velocity of BBFs (Bursty Bulk Flows). The analysis demonstrated…

Development and coupling test of active spacecraft potential control - Next generation (ASPOC-NG)

Cipriani, Fabrice; Nakamura, Rumi; Steller, Manfred +7 more

The active spacecraft potential control (ASPOC) system developed in the 1990s emits positive ions to neutralise the spacecraft potential, such as used in several missions like Geotail, Equator-S, Cluster, Doublestar and MMS. With the experience gained, the next generation of the active spacecraft potential control (ASPOC-NG) instrument has been de…