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Radio Physics and Radio Astronomy

ISSN Imprimir: 2152-274X
ISSN En Línea: 2152-2758

Archives: Volume 1, 2010 to Volume 3, 2012

Radio Physics and Radio Astronomy

DOI: 10.1615/RadioPhysicsRadioAstronomy.v2.i2.40
pages 115-124

GRAVITATIONAL LENS SYSTEM Q2237+0305 IN 2001−2008: OBSERVATIONS ON MT. MAIDANAK

V. N. Dudinov
Institute of Astronomy, V. Karazin National University of Kharkiv; and Institute of Radio Astronomy, National Academy of Sciences of Ukraine
G. V. Smirnov
Institute of Astronomy, V. Karazin National University of Kharkiv, Ukraine
V. G. Vakulik
Institute of Astronomy, V. Karazin National University of Kharkiv, and Institute of Radio Astronomy, National Academy of Sciences of Ukraine, Ukraine
A. V. Sergeev
Institute of Astronomy, V. Karazin National University of Kharkiv, and Institute of Radio Astronomy, National Academy of Sciences of Ukraine, Ukraine
A. E. Kochetov
Institute of Astronomy, V. Karazin National University of Kharkiv, and Institute of Radio Astronomy, National Academy of Sciences of Ukraine, Ukraine

SINOPSIS

The multicolor photometry of images of gravitational lens system Q2237+0305 taken in 2001 to 2008 with the AZT-22 1.5 m telescope (Mt. Maidanak, Uzbekistan) is presented, the photometry procedure applied briefly described. Comparison of our photometry results with the OGLE project data has allowed the reduction relation between these sequences of data. The photometry errors have been estimated, these of the OGLE project are shown to be slightly less than those in our measurements. Quantitative assessments are obtained for the relations between the Q2237+0305 system brightness variations produced separately by microlensing events and inherent quasar variability.


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