Microlensing effects and structure of gravitational lens systems
A study of gravitational microlensing of distant objects is presented. We performed simulations of light curves and trajectories of the image centroid of an extended source in the Chang–Refsdal lens with shear and continual dark matter. Various brightness distributions over the source (Gaussian, pow...
Збережено в:
| Дата: | 2005 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Головна астрономічна обсерваторія НАН України
2005
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| Назва видання: | Кинематика и физика небесных тел |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/79658 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Microlensing effects and structure of gravitational lens systems / E.V. Fedorova, A.N. Alexandrov, V.I. Zhdanov // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 276-278. — Бібліогр.: 5 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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dspace |
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irk-123456789-796582015-04-04T03:01:54Z Microlensing effects and structure of gravitational lens systems Fedorova, E.V. Alexandrov, A.N. Zhdanov, V.I. MS3: Physics of Stars and Galaxies A study of gravitational microlensing of distant objects is presented. We performed simulations of light curves and trajectories of the image centroid of an extended source in the Chang–Refsdal lens with shear and continual dark matter. Various brightness distributions over the source (Gaussian, power-law, Shakura–Synyaev accretion disc) have been studied. We considered in detail approximate relations and corresponding algorithms used to fit observational data on high amplification events (HAE). The results are applied to interpretation of HAE observed by OGLE and GLITP groups. The source size and caustic crossing moment are estimated from these data, however, the determination of the brightness profile is statistically not reliable. 2005 Article Microlensing effects and structure of gravitational lens systems / E.V. Fedorova, A.N. Alexandrov, V.I. Zhdanov // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 276-278. — Бібліогр.: 5 назв. — англ. 0233-7665 http://dspace.nbuv.gov.ua/handle/123456789/79658 en Кинематика и физика небесных тел Головна астрономічна обсерваторія НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
MS3: Physics of Stars and Galaxies MS3: Physics of Stars and Galaxies |
| spellingShingle |
MS3: Physics of Stars and Galaxies MS3: Physics of Stars and Galaxies Fedorova, E.V. Alexandrov, A.N. Zhdanov, V.I. Microlensing effects and structure of gravitational lens systems Кинематика и физика небесных тел |
| description |
A study of gravitational microlensing of distant objects is presented. We performed simulations of light curves and trajectories of the image centroid of an extended source in the Chang–Refsdal lens with shear and continual dark matter. Various brightness distributions over the source (Gaussian, power-law, Shakura–Synyaev accretion disc) have been studied. We considered in detail approximate relations and corresponding algorithms used to fit observational data on high amplification events (HAE). The results are applied to interpretation of HAE observed by OGLE and GLITP groups. The source size and caustic crossing moment are estimated from these data, however, the determination of the brightness profile is statistically not reliable. |
| format |
Article |
| author |
Fedorova, E.V. Alexandrov, A.N. Zhdanov, V.I. |
| author_facet |
Fedorova, E.V. Alexandrov, A.N. Zhdanov, V.I. |
| author_sort |
Fedorova, E.V. |
| title |
Microlensing effects and structure of gravitational lens systems |
| title_short |
Microlensing effects and structure of gravitational lens systems |
| title_full |
Microlensing effects and structure of gravitational lens systems |
| title_fullStr |
Microlensing effects and structure of gravitational lens systems |
| title_full_unstemmed |
Microlensing effects and structure of gravitational lens systems |
| title_sort |
microlensing effects and structure of gravitational lens systems |
| publisher |
Головна астрономічна обсерваторія НАН України |
| publishDate |
2005 |
| topic_facet |
MS3: Physics of Stars and Galaxies |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/79658 |
| citation_txt |
Microlensing effects and structure of gravitational lens systems / E.V. Fedorova, A.N. Alexandrov, V.I. Zhdanov // Кинематика и физика небесных тел. — 2005. — Т. 21, № 5-додаток. — С. 276-278. — Бібліогр.: 5 назв. — англ. |
| series |
Кинематика и физика небесных тел |
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2023-10-18T19:19:12Z |
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