Technical note: Scintillations of the double star α Cru observed by GOMOS-EnvisatReport as inadecuate




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1 FMI - Finnish Meteorological Institute 2 SHTI - LATMOS LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales 3 IAP - A.M.Obukhov Institute of Atmospheric Physics

Abstract : In this paper, we discuss scintillation time-spectra of the double star α Cru, which were measured by the GOMOS-Envisat photometer. The components of α Cru are not resolved by the angular field of view of the detector. The double structure of the light source reveals itself in the modulation of the observed scintillation spectra; this modulation is caused by anisotropic irregularities of the stratospheric air density. We present a qualitative and quantitative explanation of the properties of the double-star scintillation spectra. Possibilities of using double star scintillations for studying atmospheric air density irregularities are also discussed in the paper.





Author: Viktoria F. Sofieva - Francis Dalaudier - Valery Kan - Alexandre S. Gurvich -

Source: https://hal.archives-ouvertes.fr/



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