Optical characteristics of the night sky over Eastern Siberia after the Chelyabinsk meteorite fall. I. Night sky brightness
A. V. Mikhalev1, S. V. Podlesnyi1, P. V. Stoeva2
1Institute of Solar-Terrestrial Physics of the Siberian Branch of the RAS, 664033, Irkutsk, 126a, Lermontova str
2Institute of Space Research and Technology of the Bulgarian Academy of Sciences, 1113, Sofia, ul. Akademika Georgi Bonchev, 1, Bulgaria
Keywords: Chelyabinsk meteorite, night sky brightness
Abstract
We present observation results of the night sky brightness in Eastern Siberia after the Chelyabinsk meteorite fall on February 15, 2013. During the first nights following the Chelyabinsk meteorite fall (February 15/16 and 16/17), diurnal variations in the night sky brightness showed both an increase and a decrease in average night values of the night sky brightness relative to the preceding (background) nights. There was an increase in brightness of the night sky in late February – early March. The increase in brightness of the night sky was not observed in previous years and was atypical for the seasonal variations in intensity of the continuous spectrum of night airglow.
|
