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A Hybrid N-Body Code incorporating algorithmic regularization and Post-Newtonian forces
(Wiley InterScience: Monthly Notices of the Royal Astronomical Society, 2008-07-24)
We describe a novel N-body code designed for simulations of the central regions of
galaxies containing massive black holes. The code incorporates Mikkola’s “algorithmic”
chain regularization scheme including post-Newtonian ...
The Black hole mass of NGC 4151: comparison of reverberation mapping and stellar dynamical measurements
(American Astronomical Society - The Astrophysical Journal, 2007-11-20)
We present a stellar dynamical estimate of the black hole (BH) mass in the Seyfert 1
galaxy, NGC 4151. We analyze ground-based spectroscopy as well as imaging data
from the ground and space, and we construct 3-integral ...
Algorithmic regularization with velocity-dependent forces
(Blackwell Publishing: Monthly Notices of the Royal Astronomical Society, 2006-05)
Algorithmic regularization uses a transformation of the equations of motion such that
the leapfrog algorithm produces exact trajectories for two-body motion as well as regular
results in numerical integration of the ...
Triaxial black-hole nuclei
(University of Chicago Press: Astrophysical Journal Letters, 2002-04-01)
We demonstrate that the nuclei of galaxies containing supermassive black holes can be triaxial in shape. Schwarzschild’s method was first used to construct self-consistent orbital superpositions representing nuclei with ...
Orbital structure of triaxial black-hole nuclei
(Astrophysical Journal, 2001-03-01)
Orbital motion in triaxial nuclei with central point masses, representing supermassive black holes, is investigated. The stellar density is assumed to
follow a power law, / r−γ, with = 1 or = 2. At low energies the ...