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- W2798888051 abstract "Recently, a transient localized brightness enhancement has been observed in Jupiter's main auroral emission close to noon by Palmaerts et al. (2014). We use results from three-dimensional global MHD simulations to understand what is causing this localized peak in the main emission. In the simulations, the peak occurs every rotation period and is due to shearing motions in the magnetodisk. These shearing motions are caused by heavy flux-tubes being accelerated to large azimuthal speeds at dawn. The centrifugal force acting on these flux-tubes is then so high that they rapidly move away from the planet. When they reach noon, their azimuthal velocity decreases, thus reducing the centrifugal force, and allowing the flux-tubes to move back closer to Jupiter. The shearing motions associated with this periodic phenomenon locally increase the field aligned currents in the simulations, thus causing a transient brightness enhancement in the main auroral emission, similar to the one observed by Palmaerts et al. (2014)." @default.
- W2798888051 created "2018-05-07" @default.
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- W2798888051 date "2018-09-01" @default.
- W2798888051 modified "2023-09-26" @default.
- W2798888051 title "Periodic shearing motions in the Jovian magnetosphere causing a localized peak in the main auroral emission close to noon" @default.
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- W2798888051 doi "https://doi.org/10.1016/j.pss.2018.04.023" @default.
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