Nonlinear spiral waves in a galactic disk

Details Nonlinear spiral waves in a galactic disk Nonlinear spiral waves in a galactic disk

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jetpl..89..219a&link_type=abstract

JETP Letters, Volume 89, Issue 5, pp.219-223

Computer Science

98.52.Nr, 98.56.Ne

Scientific paper

An analytical solution of the nonlinear dynamic equations for a galactic disk is found. This solution describes the spiral design of spiral galaxies. The logarithmic profile of the spiral design and relatively larger density fluctuations as compared to velocity-field fluctuations are explained. Breaking of the obtained solution takes place for a certain critical amplitude. This can be a mechanism for the formation of galactic shocks and narrow star formation regions.

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