Influence of nonlinearity and dispersion on the evolution of packets of spiral density waves

Details Influence of nonlinearity and dispersion on the evolution of packets of spiral density waves Influence of nonlinearity and dispersion on the evolution of packets of spiral density waves

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984azh....61..814k&link_type=abstract

(Astronomicheskii Zhurnal, vol. 61, July-Aug. 1984, p. 814-817) Soviet Astronomy (ISSN 0038-5301), vol. 28, July-Aug. 1984, p. 4

Astronomy and Astrophysics

Astronomy

2

Density Wave Model, Spiral Galaxies, Wave Dispersion, Wave Packets, Galactic Evolution, Group Velocity, Nonlinearity, Wave Propagation

Scientific paper

The role of nonlinearity, dispersion, and nonuniformity in the evolution of packets of spiral density waves is considered. It is shown that the characteristic times of evolution of a packet determined by these effects can be considerably less than the time of its propagation through the galactic disk and must be taken into account in the interpretation of the observed spiral structure.

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