Unstable Spiral Modes in Disk-Shaped Galaxies: Enhancement of Growth Rate

Details Unstable Spiral Modes in Disk-Shaped Galaxies: Enhancement of Growth Rate Unstable Spiral Modes in Disk-Shaped Galaxies: Enhancement of Growth Rate

Nov 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pnas...73.3785l&link_type=abstract

Proceedings of the National Academy of Sciences of the United States of America, Volume 73, Issue 11, pp. 3785-3787

Computer Science

15

Scientific paper

An additional effect not considered in our earlier papers is found to enhance the rate of growth of spiral modes in disk-shaped galaxies. This enhanced growth appears to be attributable to the combined influence of differential rotation and tangential forces. For certain galaxy models, rapid temporal growths are possible (comparable to those found in numerical experiments), but in many real galaxies, these tendencies to extreme growth rates are probably reduced to lower levels by competing effects such as wave absorption at inner Lindblad resonance.

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