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coherent line formation

International Astronomical Union Colloquium (1)

International Astronomical Union (1)

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Coherent Line Formation with Depth-Dependent Parameters
T. R. Carson
Journal:

International Astronomical Union Colloquium / Volume 2 / August 1970

Published online by Cambridge University Press:

08 February 2017, pp. 226-238

Print publication:

August 1970
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A discrete ordinate method is developed for solving the equation of coherent line formation, for arbitrary given variations with depth in an atmosphere of the temperature (or Planck function, assuming local thermodynamic equilibrium) and the line absorption and scattering coefficients. The direct solution thus obtained can then be used as the starting point of an iterative procedure. Results obtained for an exactly soluble case indicate the utility of the method.