N-body simulations with two-orders-of-magnitude higher performance using wavelets
Journal article, 2003

Noise is a problem of major concern for N-body simulations of structure formation in the early Universe, and of galaxies and plasmas. Here for the first time we use wavelets to remove noise from N-body simulations of disc galaxies, and show that they become equivalent to simulations with two orders of magnitude more particles. We expect a comparable improvement in performance for cosmological and plasma simulations. Our wavelet code will be described in a following paper, and will then be available on request.


Alessandro Romeo

Chalmers, Department of Radio and Space Science

Cathy Horellou

Chalmers, Department of Radio and Space Science

Jöran Bergh

University of Gothenburg

Chalmers, Department of Mathematics

Monthly Notices of the Royal Astronomical Society

0035-8711 (ISSN) 1365-2966 (eISSN)

Vol. 342 2 337-344

Subject Categories

Astronomy, Astrophysics and Cosmology


Basic sciences

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