A self-regulated model of galactic spiral structure formation

Details A self-regulated model of galactic spiral structure formation A self-regulated model of galactic spiral structure formation

2001-05-22

arxiv.org/abs/astro-ph/0105392v3

Phys.Rev. E65 (2002) 016120

Astronomy and Astrophysics

Astrophysics

replaced with final version

Scientific paper

10.1103/PhysRevE.65.016120

The presence of spiral structure in isolated galaxies is a problem that has only been partially explained by theoretical models. Because the rate and pattern of star formation in the disk must depend only on mechanisms internal to the disk, we may think of the spiral galaxy as a self-regulated system far from equilibrium. This paper uses this idea to look at a reaction-diffusion model for the formation of spiral structures in certain types of galaxies. In numerical runs of the model, spiral structure forms and persists over several revolutions of the disk, but eventually dies out.

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