Statistics – Computation
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...342..814c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 342, July 15, 1989, p. 814-822.
Statistics
Computation
65
Galactic Evolution, Globular Clusters, Gravitational Collapse, Stellar Oscillations, Binary Stars, Computational Astrophysics, Fokker-Planck Equation, Star Distribution, Stellar Motions
Scientific paper
The evolution of globular clusters is modeled in a detailed Fokker-Planck calculation and is followed well beyond core collapse. The model includes the heating effects on the cluster caused by the dynamical formation and evolution of binaries, captured in three-body encounters and hardened by interactions with passing stars. As expected, energy generation by binaries reverses core collapse at sufficiently high central densities and drives a reexpansion of the core. The previous findings of Sugimoto and Bettwieser (1983) that this expansion is unstable to the development of large-amplitude oscillations in the central density and core radius. The implications of the results for the long-term evolution of globular clusters, are discussed.
Cohn Haldan
Hut Piet
Wise Michael
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