The Formation of Supermassive Binary Black Holes in Elliptical Galaxies
碩士 === 國立清華大學 === 物理系 === 104 === We study the evolution of two supermassive black holes in the galaxy. We investigate whether two black holes can form a bound binary system within the age of the universe. Since the dynamical friction is the major physical process to determine the early stage of the...
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| Format: | Others |
| Language: | en_US |
| Published: |
2016
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| Online Access: | http://ndltd.ncl.edu.tw/handle/43502072329650587136 |
| Summary: | 碩士 === 國立清華大學 === 物理系 === 104 === We study the evolution of two supermassive black holes in the galaxy. We investigate whether two black holes can form a bound binary system within the age of the universe. Since the dynamical friction is the major physical process to determine the early stage of the formation of binary supermassive black holes, we also investigate its variables and other parameters such as the mass and the initial positions of the black holes. We use the simulation to study the behavior of two black holes in the galaxy. The results show that the evolution in the Hernquist model is faster than the one in the Plummer model. The former’s critical black hole mass to become gravitational bound is roughly one tenth of the latter’s. Hence it is easier for the black holes to become a bound binary in the Hernquist model.
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