Physics – Optics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990kosis..28..721g&link_type=abstract
Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 28, Sept.-Oct. 1990, p. 721-724. In Russian.
Physics
Optics
Airglow, Atmospheric Optics, Gas Injection, Thermosphere, Gas Jets, Mass Flow, Supersonic Flow
Scientific paper
The paper presents an analysis of the formation of a dark spot (an atmospheric 'hole') in the resonant dayglow oxygen emission at 130 nm in the thermosphere in the case when a supersonic gas jet enters this region from above (e.g., from the thrusters of the Space Shuttle or the Buran, or from the vaporized matter of a 'small comet'). It is shown that, when the view is from above roughly along the jet, a mass flow of about 1 kg/sec is sufficient to cause a significant decrease in brightness in a spot with a diameter of about 50 km.
Gal'Perin Iu. I.
Gol'Braikh E. I.
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