This paper deals with acceleration processes in the magnetotail and the processes that
enhance particle precipitation from the tail into the ionosphere through electric fields in the …

One of the longstanding questions of space science is: How does the Earth's
magnetosphere generate auroral arcs? A related question is: What form of energy is …

The source regions of region‐0 (R0), region‐1 (R1), and region‐2 (R2) field‐aligned
currents (FACs) were statistically determined using DMSP particle precipitation and …

We investigate generation regions of the Region 1 field‐aligned currents (FACs) by using
global magnetohydrodynamics (MHD) simulation for steady and purely southward …

Spacecraft observations have established that all known planets with an internal magnetic
field, as part of their interaction with the solar wind, possess well-developed magnetic tails …

Polar cap arcs are often called sun-aligned arcs. Satellite observations reveal that polar cap
arcs join together at the cusp and are actually cusp aligned. Strong ionospheric plasma …

Sheared plasma flows at the low‐latitude boundary layer (LLBL) correlate well with early
afternoon auroral arcs and upward field‐aligned currents. We present a simple analytic …

The theory of the acceleration of auroral particles is reviewed, focusing on developments in
the last 15 years. We discuss elementary plasma physics processes leading to acceleration …

An active mapping mission is described that unambiguously connects measurements in the
Earth's magnetosphere to visible aurora in the atmosphere. The core of the mission is an …

The dependence of the upward field‐aligned current density (J||) at the dayside
magnetopause boundary layer is well described by a simple analytic model based on a …