Source models in gravitational lens system Q2237+0305 and high amplification events
We analyze a reliability of quasar brightness distribution (BD) parameter estimation on the light curves of different images in the system Q2237+0305 observed by OGLE and GLITP groups during High Amplification Events (HAE). We evaluated the source parameters for as small as possible data interval in...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
National Aviation University
2004-12-01
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| Series: | Вісник Астрономічної школи |
| Online Access: | http://astro.nau.edu.ua/issues/2004_V.5_Iss.1-2/229.html |
| Summary: | We analyze a reliability of quasar brightness distribution (BD) parameter estimation on the light curves of different images in the system Q2237+0305 observed by OGLE and GLITP groups during High Amplification Events (HAE). We evaluated the source parameters for as small as possible data interval in the neighborhood of HAE under supposition of power-law and gaussian BD as well as for Shakura–Sunyaev accretion disk. For these models the observational data do agree with the hypothesis of regular caustic point (fold) crossing, but they do not allow to make a choice between different BD models; this affects estimation of the source radius. |
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| ISSN: | 1607-2855 2411-6602 |