Pulsating aurora as a manifestation of non-linear wave particle interactions in the magnetosphere


We have formed an international team of scientists from various institutes in 5 different countries to better understand the causal relationship between the micro-process of the wave-particle interactions in the magnetosphere and pulsating aurora (PsA) in the ionosphere. We intend to integrate recent "observations from the ground and satellites" and "simulations and theories". Such integrated studies with numerical simulations will enable us to determine the origin of the modulations of PsA, which is a manifestation of the non-linear wave particle interactions of chorus waves. We also try to understand what process differentiates the pulsating aurora from usual diffuse aurora.

We have assembled a team of experts of ground-based observations, satellite observations, and simulations to tackle the focused questions on the pulsating aurora. This team is composed of outstanding researchers from different countries, including Japan, China, US, and multiple European nations: all of the members share an expertise in space- and/or ground-based observations using a state of art satellite and ground-based observations. Especially, the wave data from the latest satellite observations and high-speed ground based optical imaging observations provide great advantages for our understanding the non-linear process. Besides the experts of the observations, we invite several members from the simulation studies for comprehensive understanding of the physical processes. These members also represent several space missions providing the data that are relevant for our focused research, namely, NASA's Van Allen Probes and THEMIS missions, ESA's Cluster mission, and the upcoming JAXA's ERG mission. The findings from the proposed research should be broad in scope in the field of space physics and will be even relevant to better understand the impacts of PsA on the middle atmosphere through the precipitations of energetic electrons.


Yoshi Miyoshi - ISEE, Nagoya University, Nagoya, Japan
Wen Li - Boston University, Massachusetts, USA
Keisuke Hosokawa - Univeristy of Electro-Communications, Tokyo, Japan