Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars
Propagation of quasar radiation through a galaxy is analyzed, accountingfor gravitational focusing of the light rays by compactmasses distributed inside the galaxy volume. It is shown that theabsence of total correlation between fluctuations of the macroimagebrightness in different wavelengths obser...
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| Date: | 2013 |
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| Main Authors: | , |
| Format: | Article |
| Language: | Russian |
| Published: |
Видавничий дім «Академперіодика»
2013
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| Online Access: | http://rpra-journal.org.ua/index.php/ra/article/view/1117 |
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| Journal Title: | Radio physics and radio astronomy |
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Radio physics and radio astronomy| Summary: | Propagation of quasar radiation through a galaxy is analyzed, accountingfor gravitational focusing of the light rays by compactmasses distributed inside the galaxy volume. It is shown that theabsence of total correlation between fluctuations of the macroimagebrightness in different wavelengths observed in microlensingcan be explained not only by the wavelength dependence ofa quasar dimension but also by properties of the galaxy mediumwhere the quasar radiation is propagating. To distinguish betweenthe effects of the galaxy medium and parameters of the sourcequasar, the dedicated quasi-synchronous observations of a gravitationallylensed quasar at two telescopes of different diametersshould be carried out. Such observations in different spectral rangeswill provide the estimation of statistical properties of thegalaxy medium, which are determined by the density and distributionof masses in the lensing galaxy, as well as determination of thewavelength dependence of the quasar size. |
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