Abstract
We present KETJU, a new regularized tree code based on algorithmic chain regularization and implemented into Gadget-3. This new code is able to follow simultaneously galactic-scale dynamical and astrophysical processes and the small-scale supermassive black hole binary dynamics. We present here the general idea of this new code and show a test simulation of black hole binary dynamics in a galaxy merger of two massive elliptical galaxies. The separation of the black holes at the time of the merger is several orders of magnitude smaller in KETJU than when compared to ordinary Gadget-3 simulations. The merger timescale is also longer by 100 − 200 Myr.
Original language | English |
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Journal | Proceedings of the International Astronomical Union |
Volume | 12 |
Issue number | S324 |
Pages (from-to) | 342-346 |
Number of pages | 5 |
ISSN | 1743-9213 |
DOIs | |
Publication status | Published - 1 May 2017 |
MoE publication type | B3 Article in conference proceedings |
Event | IAU Symposium: New Frontiers in Black Hole Astrophysics - Cankarjev dom, Ljubljana, Slovenia Duration: 12 Sept 2016 → 16 Sept 2016 Conference number: 324 |
Fields of Science
- 115 Astronomy, Space science