Open AccessN ‐body simulations with two‐orders‐of‐magnitude higher performance using wavelets
Author(s) -
Romeo Alessandro B.,
Horellou Cathy,
Bergh Jöran
Publication year - 2003
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2003.06549.x
Subject(s) - physics , wavelet , magnitude (astronomy) , galaxy , astrophysics , noise (video) , universe , statistical physics , plasma , code (set theory) , computational physics , artificial intelligence , quantum mechanics , computer science , image (mathematics) , set (abstract data type) , programming language
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.