Applied Mathematics and Mechanics (English Edition) ›› 1990, Vol. 11 ›› Issue (10): 901-912.

• Articles •     Next Articles

NONLINEAR STELLAR RESPONSE TO THE GROWING SPIRAL GRAVITATIONAL DISTURBANCE AND ITS STABILIZING EFFECT ON THE GROWING MODE

Zhang Bin, Yue Zeng-yuan   

  1. Department of Geophysics, Peking University, Beijing
  • Received:1988-07-16 Online:1990-10-18 Published:1990-10-18
  • Supported by:
    The Projects Supported by the National Natural Scicence Foundation of China

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.

Key words: galactic density wave, spiral structure, nonlinear stellar response

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