Wave–particle interactions play important roles in local acceleration and pitch angle scattering loss of charged particle dynamics astrophysics space physics, energy transfer between plasma waves particles is a key problem physics. Using full relativistic test simulations, we quantitatively evaluate the magnetosonic wave-driven Earth's ring current protons both inside outside plasmapause at L =...

An auroral westward flow channel (AWFC) is a latitudinally narrow channel of unstable F-region plasma with intense westward drift in the dusk-to-midnight sector ionosphere. AWFCs tend to overlap the equatorward edge of the auroral oval, and their life cycle is often synchronised to that of substorms: they commence close to substorm expansion phase onset, intensify during the expansion phase, an...

[1] Global images of the plasmasphere obtained by the Extreme Ultraviolet (EUV) imager on the IMAGE satellite are used to study the evolving structure of the plasmasphere during two geomagnetic disturbances. By tracking the location of the plasmapause as a function of L shell and magnetic local time, quantitative measurements of radial and azimuthal motions of the boundary are made for interval...

The high energy electron population in Earth's outer radiation belt is extremely variable, changing by multiple orders of magnitude on timescales that vary from under an hour to several weeks. These changes are typically linked geomagnetic activity such as storms and substorms. In this study, we seek understand how coherent the across all radial distances, order provide a spatial insight into a...