Stable Models of Elliptical Galaxies

Details Stable Models of Elliptical Galaxies Stable Models of Elliptical Galaxies

2002-03-18

arxiv.org/abs/astro-ph/0203274v1

Mon.Not.Roy.Astron.Soc. 344 (2003) 1296-1306

Astronomy and Astrophysics

Astrophysics

26 pages

Scientific paper

10.1046/j.1365-8711.2003.06920.x

We construct stable axially symmetric models of elliptical galaxies. The particle density on phase space for these models depends monotonically on the particle energy and on the third component of the angular momentum. They are obtained as minimizers of suitably defined energy-Casimir functionals, and this implies their nonlinear stability. Since our analysis proceeds from a rigorous but purely mathematical point of view it should be interesting to determine if any of our models match observational data in astrophysics. The main purpose of these notes is to initiate some exchange of information between the astrophysics and the mathematics communities.

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