A formal solution of equation transfer with aberration and advection terms is developed for spectral lines taking into consideration partial redistribution of photon in a spherical medium which is expanding with a radial ...

The reasons for the occurrence of negative intensities are discussed. A method is described to obtain positive solution of radiative transfer equation in spherical symmetry in distance space theory by using frequency ...

The redistribution in frequency in lines formed in atmospheres in which the matter is moving radially outwards with velocity gradients is studied in the rest frame of the star. We velocity gradients is studied in the rest ...