Nonlinear Stellar Response to the Growing Spiral Gravitational Disturbance and Its Stabilizing Effect on the Growing Mode

Zhang Bin; Yue Zeng-yuan

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Zhang Bin, Yue Zeng-yuan. Nonlinear Stellar Response to the Growing Spiral Gravitational Disturbance and Its Stabilizing Effect on the Growing Mode[J]. Applied Mathematics and Mechanics, 1990, 11(10): 843-854.

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Nonlinear Stellar Response to the Growing Spiral Gravitational Disturbance and Its Stabilizing Effect on the Growing Mode

Department of Geophysics, Peking University, Beijing

Received Date: 1988-07-16
Publish Date: 1990-10-15

Abstract

Abstract

The nonlinear stellar response to the growing spiral gravitational disturbance is calculated. The result shows that this nonlinear response leads to the increase of Q, and the decrease of the growth rate. This self-regulation mechanism is an important reason for the growing spiral mode to reach a quasi-stationary state eventually.
- galactic density wave,
- spiral structure,
- nonlinear stellar response

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References(6)

References

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[2]	Bertin,G.,C.C.Lin and S.A.Lowe,On the morphology of spiral modes,Proceedings of a Course and Workshop on Plasma Astrophysics,Varenna,Italy,28 Aug.7 Sep.,(1984),115-120.
[3]	Lin,C.C.and R.P.Thurstans,On a spectral theory of the excitation mechanism of galactic spirals,ibid,121-130.
[4]	Lin,C.C.and G.Bertin,The Milky Way Galaxy,ed.H.van Woerden,et al.(1985),513-532.
[5]	Thurstans,R.P.On spiral modes in galaxy models,Ph.D.Thesis,MIT,USA(1987).
[6]	Lowe,S.A.,On the viability of the model theory for spiral sturcture in galaxies,Ph.D.Thesis.MIT,USA(1988).