Reconstruction of precipitating electrons and three-dimensional structure of a pulsating auroral patch from monochromatic auroral images obtained from multiple observation points

Abstract. In recent years, aurora observation networks using high-sensitivity cameras have been developed in the polar regions. These allow dimmer auroras, such as pulsating auroras (PsAs), to be observed with a high signal-to-noise ratio. We reconstructed horizontal distribution of precipitating electrons computed tomography monochromatic PsA images obtained from three points. The three-dimensional volume emission rate (VER) was also reconstructed. characteristic energy electron flux ranged 6 23 keV, and peak altitude VER 90 104 km. evaluated results model compared model's density one. correctly some extent, even after decrease intensity. suggest that associated PsAs can effectively ground-based optical observations.