Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-10-25
Mon.Not.Roy.Astron.Soc.365:991-1006,2006
Astronomy and Astrophysics
Astrophysics
16 pages, 16 figures, MNRAS accepted
Scientific paper
10.1111/j.1365-2966.2005.09783.x
Toy Stars are gas masses where the compressibility is treated without approximations but gravity is replaced by a force which, for any pair of masses, is along their line of centres and proportional to their separation. They provide an invaluable resource for testing the suitability of numerical codes for astrophysical gas dynamics. In this paper we derive the equations for both small amplitude oscillations and non linear solutions for rotating and pulsating Toy Stars in two dimensions, and show that the solutions can be reduced to a small number of ordinary differential equations. We compare the accurate solutions of these equations with Smoothed Particle Hydrodynamics (SPH) simulations. The two dimensional Toy Star solutions are found to provide an excellent benchmark for SPH algorithms, highlighting many of the strengths and also some weaknesses of the method.
Monaghan Joseph J.
Price Daniel J.
No associations
LandOfFree
Toy Stars in two dimensions 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 Toy Stars in two dimensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toy Stars in two dimensions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-429840