Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.282..234k&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 282, p. 234
Astronomy and Astrophysics
Astronomy
2
Hydrodynamics, Galaxies: Structure
Scientific paper
Flat, infinitesimally thin, rigidly rotating, self-gravitating configurations of a polytropic gas are investigated. By means of numerical computations it is demonstrated that, for more rapid rotation rates, Maclaurin discs undergo a bifurcation into dumb-bell shaped configurations which then turn into a toroidal sequence. The point of bifurcation lies approximately at T/W = 0.349. This bifurcation phenomenon corresponds closely to the three-dimensional case of homogeneous rotating bodies with a constant density.
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