The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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[발표취소] Gravitational Lensing by an Isothermal Sphere with a Supermassive Black Hole

  • Kim, Donghyeon (Department of Astronomy and Atmospheric sciences. Kyungpook National University) ;
  • Park, Myeong-Gu (Department of Astronomy and Atmospheric sciences. Kyungpook National University)
  • Published : 2015.10.15
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Abstract

Gravitational lensed quasar systems are usually explained by a source quasar lensed by a galaxy that can be approximated by an isothermal sphere. But most galaxies have a supermassive black hole (SMBH) at its center. We study the lensing by an isothermal sphere with a central SMBH. The additional lensing effects of a SMBH on the number, position, and magnification of lensed images are investigated. We apply the analysis to observed lens systems including Q0957+561. We also study the lensing by an elliptical mass distribution with a SMBH.

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