|
The dynamical time scale is in general, the length of time over which changes in one part of a body can be communicated to the rest of that body. This is often related to the time taken for a system to move from one equilibrium state to another after a sudden change.
Astronomical Use In a star, the dynamical time scale is defined as the time that would be taken for a test particle released at the surface to fall under the star's potential to the centre point. By appropriate manipulation of the equations of stellar structure this can be found to be; The 'fundamental' oscillatory mode of a star will be at approximately the dynamical time scale, oscillations at this frequency are seen in Cepheid variables. | ||||||||
|
| |||||||||
 |
|
| |