Degenerate equilibrium states of collisionless stellar systems

Details Degenerate equilibrium states of collisionless stellar systems Degenerate equilibrium states of collisionless stellar systems

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.296..569c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 296, Issue 3, pp. 569-578.

Astronomy and Astrophysics

Astronomy

54

Celestial Mechanics, Stellar Dynamics, Galaxies: General

Scientific paper

We study spherically symmetrical equilibrium states of collisionless stellar systems confined to a spherical box. These equilibrium states correspond to the statistics introduced by Lynden-Bell in his theory of `violent relaxation', and are described by a Fermi-Dirac distribution function. We compute the corresponding equilibrium diagram and show that a global entropy maximum exists for any accessible control parameter. This equilibrium state shows a pronounced separation between a degenerate core and a halo. We therefore check that degeneracy is able to stop the gravitational collapse (of a collisionless system), and we propose a simple model for the `core-halo' structure. We also discuss the relevance of our study for real galaxies or other astrophysical systems such as massive neutrinos.

Affiliated with

Also associated with

No associations

Rating

Degenerate equilibrium states of collisionless stellar systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Degenerate equilibrium states of collisionless stellar systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Degenerate equilibrium states of collisionless stellar systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1864515