N-body simulations in modified Newtonian dynamics

Details N-body simulations in modified Newtonian dynamics N-body simulations in modified Newtonian dynamics

2008-11-18

arxiv.org/abs/0811.2878v1

Astronomy and Astrophysics

Astrophysics

4 pages, no figures. To appear in EAS Publication Series (Proceedings of Symposium 7 of the JENAM 2008, Vienna)

Scientific paper

We describe some results obtained with N-MODY, a code for N-body simulations of collisionless stellar systems in modified Newtonian dynamics (MOND). We found that a few fundamental dynamical processes are profoundly different in MOND and in Newtonian gravity with dark matter. In particular, violent relaxation, phase mixing and galaxy merging take significantly longer in MOND than in Newtonian gravity, while dynamical friction is more effective in a MOND system than in an equivalent Newtonian system with dark matter.

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