A prescription for the softening length in flat disks

Details A prescription for the softening length in flat disks A prescription for the softening length in flat disks

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sf2a.conf..105h&link_type=abstract

SF2A-2006: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: D. Barret, F. Casoli, G.

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

Whereas ``soften gravity'' simplifies the computation of the gravitational potential due to continuous distributions of matter, it usually fails to give reliable values. For flat disks, λ is set to a certain fraction of the (real) disk thickness. However, this fraction seems arbitrary and varies from one author to the other. We have determined this fraction for axisymmetrical systems from a rigorous mathematical analysis.

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