Dear Colleagues,

The objective of this Special Issue is to assemble a coherent set of papers that provide recent advances in the field of pulsating aurora investigation. Pulsating aurora (PsA) is a type of high-latitude atmospheric luminescence stimulated by energetic electrons with quasiperiodic local changes in emission amplitude. Recent advances in aurora observations by satellite missions and ground-based cameras with a high temporal resolution produce a detailed recording of the temporal and spatial structure of pulsating patches. Measurements of magnetospheric waves and charged particle flux provide an understanding of the close relation between energetic electron flux modulation, the structure of the chorus waves packets and the fine temporal structure of aurora emissions. Simulations demonstrate that microbursts of relativistic electrons arise during the interaction of chorus waves with particles, and these microbursts are the high-energy tail of pulsating aurora electrons. Recent experimental studies demonstrate a strong correlation between relativistic electron microbursts and some types of PsA. Precipitations of electrons with energies ranging from a few hundred kiloelectronvolts (keV) to a few megaelectronvolts (MeV) during PsA were observed. These precipitations lead to an increased ionization of the atmosphere at much lower altitudes than usual aurora. Nevertheless, the origin of PsA is still an open question, and further detailed measurements using joint ground-based and satellite measurements are needed. These and other intriguing questions and problems as well as recent theoretical and experimental progress are expected to be covered by this Special Issue.

Authors are encouraged to submit original papers that include, but are not limited to, topics of observations, modeling, instrumentation, etc. Review papers are also welcome.

Dr. Pavel Klimov
Dr. Boris Kozelov
Guest Editors

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• pulsating aurora
• satellite measurements
• electron microbursts
• dynamics of magnetospheric plasma
• comprehensive satellite and ground-based measurements
• wave–particle interaction