SUPERBOX - an efficient code for collisionless galactic dynamics

Fellhauer, M, Kroupa, P, Baumgardt, H, Bien, R, Boily, CM, Spurzem, R and Wassmer, N (2000) SUPERBOX - an efficient code for collisionless galactic dynamics. New Astronomy, 5 6: 305-326. doi:10.1016/S1384-1076(00)00032-4

Author Fellhauer, M
Kroupa, P
Baumgardt, H
Bien, R
Boily, CM
Spurzem, R
Wassmer, N
Title SUPERBOX - an efficient code for collisionless galactic dynamics
Journal name New Astronomy
ISSN 1384-1092
Publication date 2000-09-01
Year available 2000
Sub-type Article (original research)
DOI 10.1016/S1384-1076(00)00032-4
Open Access Status DOI
Volume 5
Issue 6
Start page 305
End page 326
Total pages 22
Place of publication AMSTERDAM
Publisher Elsevier BV
Language eng
Abstract We present SUPERBOX, a particle-mesh code with high resolution sub-grids and an NGP (nearest grid point) force-calculation scheme based on the second derivatives of the potential. SUPERBOX implements a fast low-storage FFT-algorithm, giving the possibility to work with millions of particles on desk-top computers. Test calculations show energy and angular momentum conservation to one part in 10(5) per crossing-time. The effects of grid and numerical relaxation remain negligible, even when these calculations cover a Hubble-time of evolution. As the sub-grids follow the trajectories of individual galaxies, the code allows a highly resolved treatment of interactions in clusters of galaxies, such as high-velocity encounters between elliptical galaxies and the tidal disruption of dwarf galaxies. Excellent agreement is obtained in a comparison with a direct-summation N-body code running on special-purpose GRAPE 3 hardware. The orbital decay of satellite galaxies due to dynamical friction obtained with SUPERBOX agrees with Chandrasekhar's treatment when the Coulomb logarithm ln Lambda approximate to 1.5. (C) 2000 Elsevier Science B. V. All rights reserved.
Keyword methods : numerical
galaxies : evolution
galaxies : interactions
galaxies : kinematics and dynamics
Spheroidal Satellite Galaxies
Sinking Satellites
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
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