• 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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    • Keywords


      radiative transfer; partial redistribution function; commoving Frame; pectral lines

    • 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 functionRI 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.

    • Author Affiliations


      A. Peraiah1

      1. Indian Institute of Astrophysics, Bangalore - 560034
    • Dates

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