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A regularized N-body algorithm for gravitational collapse clustering

  • Jun Hidaka (a1)

Abstract

In N-body problem, it is necessary to regularize forces between close encountering particles to conserve their total energy. Without regularization, these particles has rapid change of their energy. We can, therefore, select close encountering particles looking at their energy and apply regularization to them. We discuss application of this scheme to spherically collapsing case.

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References

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Mikkola, S., & Aarseth, S. 1993, Celest. Mech. Dyn. Astron., 57, 439
Heggie, D.C. 1974, Celest. Mech., 10, 217
Mikkola, S., & Tanikawa, K. 1999, MNRAS, 310, 745
Preto, M., & Tremaine, S. 1999, ApJ, 118, 2532
Skeel, R. D., in The Graduate Student's Guide to Numerical Analysis'98, eds. Ainsworth, , Levesley, & Marletta, 119, 1999 Springer-Verlag

A regularized N-body algorithm for gravitational collapse clustering

  • Jun Hidaka (a1)

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