The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 40 Issue 2
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- Pages.51.2-51.2
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- 2015
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- 1226-2692(pISSN)
[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
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.
Keywords