Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 401, Issue 3, Pages 1898-1903Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2009.15775.x
Keywords
methods: N-body simulations; methods: numerical; stars: kinematics
Categories
Funding
- Ministry for Higher Education and Research [BFR-04/55]
- Luxembourg
- NWO [643.200.503]
- European Doctoral College in Strasbourg, France
- LKBF
- Netherlands Advanced School for Astrophysics
- Netherlands Organization for Scientific Research [643.200.503]
- NASA [NNX07AG95G]
- NSF [AST-0708299]
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This paper introduces a novel approach for sampling the orbits of an N-body simulation. The gist of the method is to exploit individual phase-space coordinates acquired during integration of the equations of motion. This technique, which we dub 'particle-based sampling scheme', is tailor-made for resolving rapid time-variation of coordinates when needed. The PBaSS requires less disk space (by factors of 10 or more) to retrieve orbits at a chosen accuracy than those reconstructed using the classic snapshot approach. Furthermore, the PBaSS also allows a reconstruction of the system at any time-resolution not smaller than the smallest integration time-step in a post-simulation treatment, thus avoiding costly simulation reruns.
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