The Geometry of the Auroral Appearance (IMAGE)

Research Organization of Information and Systems

The Geometry of the Auroral Appearance

Caption

The geometry of the auroral appearance as seen from Kyoto on Sept. 17 1770, is calculated for its reconstruction. Diamonds show the positions of the red aurora tangentially mapped to the flat plane of the 60 by 80 field-of-view, plotted every 100 km in east-west direction and every 10 km in vertical direction. The main body of the emissions is assumed to be in the range of 200 km to 500 km, with an inclination angle of 45 along the local magnetic field. Elevation angles are shown by angle markings on the vertical axis with plus signs.

Credit

Kataoka R and Iwahashi K, Space Weather, 2017

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