A Simple Method to Compensate Softening Effects in N-Body Simulations of Spherical Stellar Systems

Details A Simple Method to Compensate Softening Effects in N-Body Simulations of Spherical Stellar Systems A Simple Method to Compensate Softening Effects in N-Body Simulations of Spherical Stellar Systems

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005rmxaa..41...41m&link_type=abstract

Revista Mexicana de Astronomía y Astrofísica Vol. 41, pp. 41-44 (2005) (http://www.astroscu.unam.mx/~rmaa/)

Astronomy and Astrophysics

Astronomy

Galaxies: Spherical, Globular Clusters, Methods: N-Body

Scientific paper

Simulations of stellar systems involve, first, creating a model and, subsequently, following its evolution through numerical integration of the equations of motion. The models can be generated from theoretical distributions obtained from the Newtonian potential, but the integration demands resorting to softened potentials in order to reduce relaxation effects. Usually, the difference between both potentials causes only negligible alterations in the model, but in some cases (e.g., cuspy distributions) it can substantially alter it. Here we present a model-independent simple method to correct this problem in simulations of spherical stellar systems.

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