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Radio Physics and Radio Astronomy

ISSN Imprimer: 2152-274X
ISSN En ligne: 2152-2758

Archives: Volume 1, 2010 to Volume 3, 2012

Radio Physics and Radio Astronomy

DOI: 10.1615/RadioPhysicsRadioAstronomy.v3.i1.20
pages 7-17

FOCUSING OF THE QUASAR RADIATION IN THE GRAVITATIONAL FIELD OF A MICROLENS-STAR LOCATED IN A MACROLENS-GALAXY: 2. ISOPHOT STRUCTURE AND AMPLIFICATION OF BRIGHTNESS OF THE RADIATION SOURCE VISIBLE IMAGE

L. A. Berdina
Institute of Radio Astronomy, National Academy of Sciences of Ukraine
A. A. Minakov
Institute of Radio Astronomy, National Academy of Sciences of 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

RÉSUMÉ

The focusing effect by a complex gravitational lens formed by the gravitational fields of a macrolens-galaxy and microlens star is analyzed using the Sobolev method within the paraxial optics approximation. The problem is solved for an arbitrary location of the microlens along the source-macrolens-observer line. The image isophots are presented and magnification factor of the complex lens is calculated. It is shown that the greatest influence of the microlens on the focusing effect is observed in the case where the microlens is located on the macrolens-observer segment. The obtained results can be used for solving the inverse problem of recovering parameters of a hidden mass from observations of the microlensing.


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