Galactic detonation waves - Numerical models illustrating the transition from deterministic to stochastic

Details Galactic detonation waves - Numerical models illustrating the transition from deterministic to stochastic Galactic detonation waves - Numerical models illustrating the transition from deterministic to stochastic

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282..412f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 282, July 15, 1984, p. 412-426. Research supported by the Natural Sciences

Astronomy and Astrophysics

Astrophysics

3

Detonation Waves, Galactic Evolution, Galactic Rotation, Shock Wave Propagation, Wave Fronts, Astronomical Models, Point Sources, Solitary Waves, Stochastic Processes

Scientific paper

Using numerical techniques, the authors have followed the time evolution of blast waves detonated in differentially rotating disks. Predictions from an analytic treatment are tested and extended beyond the first annihilation of opposing wave fronts. Solitary wave solutions are confirmed for galaxy-wide deterministic blast waves propagating in one direction. While azimuthal components of these detonation waves do intersect, resulting in the decay of transient cusplike solutions, it is the finite size of the disk and the coherence of the blast wave, not the collision of wave fronts, that results in the final death of the propagation. When the blast wave is less coherent either because of shorter quiescent times or because of lower efficiencies of propagation, then the detonation is very long-lived and eventually fills the galaxy with randomly propagating fragments.

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