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Information × Registration Number 0203U008020, 0101U002789 , R & D reports Title Investigations of physical properties on surfaces and in atmospheres of planets popup.stage_title Head Korokhin V., Registration Date 10-04-2003 Organization Kharkov National University named after V.N.Karazin popup.description2 Objects of investigations are the Moon, Jupiter, aerosol and dust particles of Solar system. Goal of the work is research of optical properties of planets atmospheres and surfaces, development of theory of light scattering by systems of interacting scatterers. Methods of investigation are photometrical and polarimetrical, using theoretical analysis of data, theoretical and digital modeling the processes of light scattering on planets surfaces. Polarimetric observations of lunar surface for 15 phase angles (from 8 grad. to 117 grad/) were carried out. Distributions of linear polarization parameters over lunar disk for all observations before full moon have been obtained. The maps of distribution of maximum and phase angle of positive polarization for lambda (eff.) = 461 nm and lambda (eff.) = 669 nm for east semisphere are constructed. On the base of large quantity of observational material more precise empirical Akimov's formula has been obtained. A value of parameter nju, appearing in it, for the maintypes of lunar surface has been found. Also it is shown that the albedo practically does not influence on the law of light distribution over lunar disk, and this distribution is determinated only by surface relief. A new methodic of data processing for panoramic CCD-polarimetry for calculation the distribution of the polarization parameters has been developed. According to the new methods the processing the observations of 2000-2001 years for blue part of spectrum has been carried out. Mean north-south asymmetry of linear polarizations degree is — 0.85% ± 0.36 for 2000 and 0.28% ± 0.24 for 2001. As a whole this result confirms the hypothesis of influence of insolation on season fluctuations of north-south asymmetry of Jovian polarization. "x_Proc" plug-in for program complex "IRIS" has been greatly developed and improved. "x_Proc" plug-in serves for processing and analysis of big arrays of photometric and polarimetric data. A modernization of electronic part of photopolarimeter "x_CCD" has been carried out:scheme of remote control of frame exposure time from PC has been designed and produced. Equations of light multiscattering by discrete random medium, which describe also interference part of scattered light, have been obtained. Analysis of dependences of interference effects features from medium properties is performed. This permits to predict behaviour of interference effects for different kinds of scatterers. Dependences of halfwidth of opposition intensity peak and position of polarization extremum from properties of optically thin medium layer have been obtained. On this base preliminary estimates of scatterers concentration on the surface of Saturn rings particles are performed. Product Description popup.authors popup.nrat_date 2020-04-02 Close