Comoving frame calculations of spectral lines formed in rapidly expanding media with the partial frequency redistribution function for zero natural line width |
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| Authors: | A Peraiah |
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| Institution: | (1) Indian Institute of Astrophysics, 560034 Bangalore |
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| Abstract: | Comoving frame calculations have been used to compute the spectral lines formed in rapidly expanding spherical media. We have
employed the angle-averaged partial frequency redistribution functionR
I with a two-level atom model in non-LTE atom approximation. A linear velocity law increasing with radius has been employed
with maximum velocity at Τ=0 being set equal to 30 mean thermal units. It is found that one obtains almost symmetric emission
line profiles at large velocities similar to those found in quasars. |
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| Keywords: | radiative transfer partial redistribution function commoving Frame pectral lines |
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