Requirements of an N-body integrator for astronomy

P.W. Sharp


N-body simulations in astronomy form a challenging set of initial value problems for numerical integrators. The challenge comes
from the variety of problems and their size - one recent
simulation required 300 million second order equations, another
90 thousand million integration steps.
A number of integrators for specific types of simulations are
available. We investigate what is required of an integrator
intended to efficiently perform a wide range of N-body

N-body integrator, efficiency, requirements

Math Review Classification
Primary 70F10, 85-04 ; Secondary 65L05

Last Updated
May 04, 2000

12 pages

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