Reconstruction of precipitating electrons and three-dimensional structure of a pulsating auroral patch from monochromatic auroral images obtained from multiple observation points
National Institute of Polar Research, Tachikawa 190-8518, Japan
Takeshi Sakanoi
Graduate School of Science, Tohoku University, Sendai 980-8578,
Japan
Yoshimasa Tanaka
National Institute of Polar Research, Tachikawa 190-8518, Japan
Polar Environment Data Science Center, Joint Support-Center for Data
Science Research, Research Organization of Information and Systems,
Tachikawa 190-0014, Japan
Department of Polar Science, The Graduate University for Advanced
Studies (SOKENDAI), Tachikawa 190-8518, Japan
Yasunobu Ogawa
National Institute of Polar Research, Tachikawa 190-8518, Japan
Polar Environment Data Science Center, Joint Support-Center for Data
Science Research, Research Organization of Information and Systems,
Tachikawa 190-0014, Japan
Department of Polar Science, The Graduate University for Advanced
Studies (SOKENDAI), Tachikawa 190-8518, Japan
Keisuke Hosokawa
Graduate School of Informatics and Engineering, University of
Electro-Communications, Chofu 182-8585, Japan
Björn Gustavsson
Department of Physics and Technology, Arctic University of Norway (UiT), 9037
Tromsø, Norway
Kirsti Kauristie
Space Research and Observation Technologies, Finnish Meteorological Institute, 00101 Helsinki, Finland
The pulsating auroral generation mechanism has been investigated by observing precipitating electrons using rockets or satellites. However, it is difficult for such observations to distinguish temporal changes from spatial ones. In this study, we reconstructed the horizontal 2-D distribution of precipitating electrons using only auroral images. The 3-D aurora structure was also reconstructed. We found that there were both spatial and temporal changes in the precipitating electron energy.
The pulsating auroral generation mechanism has been investigated by observing precipitating...
