In:
Annales Geophysicae, Copernicus GmbH, Vol. 40, No. 4 ( 2022-07-12), p. 475-484
Abstract:
Abstract. In recent years, aurora observation networks using
high-sensitivity cameras have been developed in the polar regions. These
networks allow dimmer auroras, such as pulsating auroras (PsAs), to be
observed with a high signal-to-noise ratio. We reconstructed the horizontal
distribution of precipitating electrons using computed tomography with
monochromatic PsA images obtained from three observation points. The
three-dimensional distribution of the volume emission rate (VER) of the PsA
was also reconstructed. The characteristic energy of the reconstructed
precipitating electron flux ranged from 6 to 23 keV, and the peak altitude
of the reconstructed VER ranged from 90 to 104 km. We evaluated the results
using a model aurora and compared the model's electron density with the
observed one. The electron density was reconstructed correctly to some
extent, even after a decrease in PsA intensity. These results suggest that
the horizontal distribution of precipitating electrons associated with PsAs
can be effectively reconstructed from ground-based optical observations.
Type of Medium:
Online Resource
ISSN:
1432-0576
DOI:
10.5194/angeo-40-475-2022
DOI:
10.5194/angeo-40-475-2022-corrigendum
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2022
detail.hit.zdb_id:
1458425-6
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