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Atmospheric and Oceanic Optics

2015 year, number 8

Optical characteristics of the night sky over Eastern Siberia after the Chelyabinsk meteorite fall. II. Airglow

A.V. Mikhalev1, C.V. Podlesny1, N.V. Kostyleva1, E.S. Komarova2
1Institute of Solar-Terrestrial Physics of the Siberian Branch of the RAS, 664033, Irkutsk, 126a, Lermontova str.
2Irkutsk State University, 664003, Irkutsk, 1, Karl Marx Str.
Keywords: Челябинский метеорит, яркость ночного неба, собственное излучение атмосферы, эмиссии верхней атмосферы, Chelyabinsk meteorite, night sky brightness, airglow, emissions of the upper atmosphere

Abstract

We present observation results of airglow variations in emissions of OI 557.7 nm, OI 630 nm, and NaI 589.0-589.6 nm in Eastern Siberia after the Chelyabinsk meteorite fall on February 15, 2013. In the first nights, we discovered certain features of OI 557.7 nm, OI 630 nm, and NaI 589.0-589.6 nm emissions related to the changes of mean night intensities (OI 557.7 nm emission decrease, NaI 589.0-589.6 nm emission increase) and night variations in these emissions. A month after the fall of the Chelyabinsk meteorite, intervals were found with increasing intensities of OI 557.7 nm and NaI of 589.0-589.6 nm emissions as compared to preceding periods. Nature of some marked features of variations in OI 557.7 nm, OI 630 nm, and NaI 589.0-589.6 nm emissions does not exclude their possible coupling with the Chelyabinsk meteorite.