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Information × Registration Number 0306U001544, 0104U000669 , R & D reports Title Research of gravitational lensed quazars popup.stage_title Спостереження гравітаційних лінз. Теоретичні дослідження явища гравітаційного лінзування та комп'ютерне моделювання явищ макро- та мікролінзувань Head Dudinov Volodimir Mikolayovich, Registration Date 20-04-2006 Organization Kharkov national university named after V.N. Karazin popup.description2 The interest in investigation of gravitationally lensed quasars (GLQ) is extremely high and is caused by potentialities to solve a number of fundamental astrophysical problems, such as the problem of the dark matter in the Universe, a possibility to examine the quasar structure with an unprecedented angular resolution, and finally, a possibility to determine the Hubble constant, which is one of the most important cosmological parameters. This year, the main efforts were devoted to interpretation of the observational data that have been taken earlier, and to theoretical investigations. In particular, a statistical simulation of microlensing events in the Q2237+0305 system was carried out, which permitted to specify the model of spatial structure of the Q2237 quasar, and to estimate its dimensions. Possible effects of the light diffraction on formation of gravitationally lensed images were examined, and investigation of dynamics of toroidal structures was fulfilled, which may concern а quasar's physical model. Also, observations of GLQs with the AZT-22 telescope of the Maidanak Observatory continued, as well as processing of observational data taken this year and earlier. To successfully continue observations of gravitationally lensed quasars, aligning of the two focal systems of the AZT-22 telescope was fulfilled. Product Description popup.authors popup.nrat_date 2020-04-02 Close