GRAVITATIONAL LENSING BY GLOBULAR CLUSTERS. INFLUENCE OF MICROLENSING

Автор(и)

  • A. V. Yushchenko Astronomical observatory, Odessa National University, 65014, park Shevchenko, Odessa, Ukraine, Україна
  • P. G. Niarchos Department of Astrophysics, Astronomy and Mechanics, University of Athens, Greece, Греція
  • S. Terpan Department of astronomy, Odessa National University, Ukraine, Україна
  • V. Manimanis Department of Astrophysics, Astronomy and Mechanics, University of Athens, Greece, Греція

DOI:

https://doi.org/10.18524/1810-4215.2001.14.99509

Ключові слова:

quasi-stellar objects, galaxies, halos, gravitational lensing

Анотація

Quasar-galaxy associations can be explained as gravitational lensing by globular clusters, located in the halos of foreground galaxies. We propose new observational test for checking this hypothesis. We used SUPERCOSMOS sky survey to find over-densities of star-like sources with zero proper motions in the vicinities of foreground galaxies from CfA3 catalog. Preliminary results show that our hypothesis is true. We discuss the in of microlensing on the results of observations. We made CCD VRI photometry on 1.22 meter telescope of Kryonerium observatory (Greece) to select extremely lensed objects around 6 galaxies.

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Опубліковано

2017-04-20

Номер

Том 14 (2001)

Розділ

Статті

Ліцензія

Авторське право (c) 2017 Odessa Astronomical Publications

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Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року