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Stability of a Collisionless Stellar Disk

Published online by Cambridge University Press:  25 May 2016

E. Griv
E. Griv*
Affiliation:
Department of Physics, Ben-Gurion University, Israel

Extract

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The study of stability of the stellar disks of flat galaxies is the first step towards an understanding of the phenomena of spiral structure. To explain the spiral pattern, Lin and Shu (1964) further developed the Lindblad's idea of density waves by considering the spiral structure as the collective effect in a self-gravitating system. As an extension to the original Lin-Shu theory, unstable spiral modes have been obtained from an asymptotic analysis (e.g., Bertin [1980]). In such “modal theory”, the Jeans-type instability (even weak) is important to the maintenance of spiral structure.

Type
Chapter 6: How are we to Understand the Large Scale Structure of the ISM?
Information
Symposium - International Astronomical Union , Volume 169: Unsolved Problems of the Milky Way , 1996 , pp. 519 - 520
Copyright
Copyright © Kluwer 1996 

References

Bertin, G. (1980) Phys. Rep. , 61, p. 1 Google Scholar
Griv, E., Chiueh, Tz. and Peter, W. (1994) Physica A , 205, p. 299 Google Scholar
Grivnev, E.M. (1988) Soviet Astron. , 32, p. 139 Google Scholar
Lin, C.C. and Shu, F.H. (1964) Astrophys. J., 140, p. 646 CrossRefGoogle Scholar