Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars

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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Datum:2013
Hauptverfasser: Dudinov, V. N., Kochetov, A. E.
Format: Artikel
Sprache:rus
Veröffentlicht: Видавничий дім «Академперіодика» 2013
Online Zugang:http://rpra-journal.org.ua/index.php/ra/article/view/1117
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Назва журналу:Radio physics and radio astronomy

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Radio physics and radio astronomy
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spelling oai:ri.kharkov.ua:article-11172013-04-05T00:18:06Z Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars Границы применимости геометрической оптики при анализе наблюдений гравитационно-линзированных квазаров Dudinov, V. N. Kochetov, A. E. 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. Рассмотрено распространение света квазара через галактику с учетом гравитационной фокусировки лучей на компактных массах, расположенных в объеме галактики. Показано, что наблюдаемое при микролинзировании отсутствие полной корреляции флуктуаций яркости компонент квазара на разнесенных длинах волн может быть объяснено не только зависимостью размера квазара от длины волны, но и свойствами среды галактики, через которую проходит свет квазара. Чтобы разделить влияние среды и параметров источника излучения требуется организовать специальные, практически синхронные, наблюдения гравитационно-линзированного квазара на двух телескопах разного диаметра. Такие наблюдения на разнесенных длинах волн позволят получить оценку статистических свойств среды распространения света, которые определяются плотностью и распределением масс в галактике, и установить зависимость характерного размера квазара от длины волны. Видавничий дім «Академперіодика» 2013-04-03 Article Article application/pdf http://rpra-journal.org.ua/index.php/ra/article/view/1117 РАДИОФИЗИКА И РАДИОАСТРОНОМИЯ; Vol 18, No 1 (2013); 26 RADIO PHYSICS AND RADIO ASTRONOMY; Vol 18, No 1 (2013); 26 РАДІОФІЗИКА І РАДІОАСТРОНОМІЯ; Vol 18, No 1 (2013); 26 2415-7007 1027-9636 rus http://rpra-journal.org.ua/index.php/ra/article/view/1117/755
institution Radio physics and radio astronomy
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datestamp_date 2013-04-05T00:18:06Z
collection OJS
language rus
format Article
author Dudinov, V. N.
Kochetov, A. E.
spellingShingle Dudinov, V. N.
Kochetov, A. E.
Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars
author_facet Dudinov, V. N.
Kochetov, A. E.
author_sort Dudinov, V. N.
title Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars
title_short Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars
title_full Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars
title_fullStr Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars
title_full_unstemmed Limits of Applicability of the Geometrical Optics in Analyzing Observations of Gravitationally Lensed Quasars
title_sort limits of applicability of the geometrical optics in analyzing observations of gravitationally lensed quasars
title_alt Границы применимости геометрической оптики при анализе наблюдений гравитационно-линзированных квазаров
description 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.
publisher Видавничий дім «Академперіодика»
publishDate 2013
url http://rpra-journal.org.ua/index.php/ra/article/view/1117
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AT kochetovae granicyprimenimostigeometričeskojoptikiprianalizenablûdenijgravitacionnolinzirovannyhkvazarov
first_indexed 2025-07-17T11:27:34Z
last_indexed 2025-07-17T11:27:34Z
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