Göran Marklund

TL;DR: For example, NASA's magnetospheric multiscale (MMS) mission has found direct evidence for electron demagnetization and acceleration at sites along the sunward boundary of Earth's magnetosphere where the interplanetary magnetic field reconnects with the terrestrial magnetic field as discussed by the authors.

TL;DR: In this paper, the authors present studies of the electric field data from various regions along the CLUS-TER orbit. They all point towards a very high coherence for phenomena recorded on four spacecraft that are sepa- rated by a few hundred kilometers for structures over the whole range of apparent frequencies from 1 mHz to 9 kHz.

TL;DR: In this article, the authors derived the two-dimensional distribution of ionospheric electric fields and conductivities and modeled the three-dimensional current flow in the vicinity of the westward travelling surge.

TL;DR: In this article, the double-probe electric field instrument on the Freja satellite was used to study the fine-structured and dynamic plasma of the upper auroral ionosphere.

TL;DR: The first observations by a formation of identically instrumented satellites crossing a beam of upward-accelerated electrons are reported, suggesting that the evacuation of the electrons from the ionosphere contributes to the formation of the downward-pointing magnetic-field-aligned electric fields.