• Corpus ID: 14296277

Numerical Simulations in Cosmology I: Methods

  title={Numerical Simulations in Cosmology I: Methods},
  author={Anatoly Klypin},
  journal={arXiv: Astrophysics},
  • A. Klypin
  • Published 25 May 2000
  • Physics
  • arXiv: Astrophysics
This lecture gives a short introduction to different methods used in cosmology. The focus is on major features of N-body simulations: equations, main numerical techniques, effects of resolution, and methods of halo identification. 

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Multiple time scales

Numerical simulations using particles

  • Numerical simulations using particles
  • 1981

J.E. Astron. J

  • J.E. Astron. J
  • 1970


  • ApJS
  • 1987


  • ApJS
  • 1991

Numerical simulations using particles

  • Hernquist L
  • 1972

astro-ph/9912257, accpented to MNRAS

  • Klypin A., & Holtzman J.1997,
  • 1983

Physics Reports , 262 , 2 Sellwood J . A . 1987

  • 1995