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Дата изменения: Fri Jun 21 20:07:33 1996
Дата индексирования: Sat Dec 22 05:11:01 2007
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Determination of the stellar wind velocity.

Fluctuating moment (see eq.(1)) can be estimated as:

So for D we can write the equation which differs from eq.(6) (Lipunov & Popov 1995):

where -turbulent velocity, -characteristic scale of the turbulence. This scale is of order of radius of gravitational capture, :

where

The turbulent velocity is less or equal to the sound speed, (in opposite case a great bulk of energy will dissipate in the form of shock waves), that's why we can write:

where and .

From eq. (12) we can get:

here

As we see there is a strong dependence of D on v. So we can evaluate v(in this case it is the stellar wind velocity, ):

Values of are shown in table 3.