Abstract
The work analytically studies the effect of “expansion opacity” in the envelope of supernovae. Between separate lines of different frequencies, shifted due to the Doppler effect, nonlocal radiative interaction occurs. In the case of a large number of bound-bound transitions, opacity is increased when the plasma expands with a non-uniform velocity field. A method is proposed for transforming the transport equation, allowing correctly calculate the average values characterizing the radiation field, as well as the averaged opacity in such media.
Publisher
Keldysh Institute of Applied Mathematics