OVERVIEW
The 2nd meeting will be held in July, 2018. The 2nd meeting will focus on the direct comparison between the chorus wave data from the ERG satellite and the ground-based optical observations at the conjugate points on the ground. The newly developed wave-particle interaction analyzer that can directly measure the energy exchange between waves and electrons is installed in the upcoming JAXA’s ERG mission. By conducting integrated studies with the plasma wave data from ERG, the ground-based high-speed imaging, and a computer simulation, we will be able to identify which micro-structures of chorus waves can produce the internal modulations of the pulsating aurora. If the chorus waves observed in the magnetosphere can explain modulations of the PsA for all time scales from a few tens of msec to a few sec, it will be possible to identify the source region of PsA. In case some of the modulations, especially the fast modulations cannot be explained by only chorus waves in the magnetosphere, we need to discuss other processes that create the modulations of PsA in the magnetosphere-ionosphere coupling region [e.g., Sato et al, 2004] as well as in the ionospheric altitudes.
