Nonlinear Response of the Interstellar Gas Flow to Galactic Spiral Density Waves
Supersonic nonlinear gas flow is studied in order to describe galactic spiral density waves. It is shown analytically that ultra harmonic periodic solutions may exist if nonlinear effects are taken into account. The relevance of those solutions to observed data is discussed.
KeywordsGravitational Potential Nonlinear Response Galactic Center Spiral Wave Spiral Density Wave
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