Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mnras.387.1622m&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 387, Issue 4, pp. 1622-1626.
Astronomy and Astrophysics
Astronomy
2
Line: Profiles, Quasars: Absorption Lines
Scientific paper
Using the binomial expansion theorem, the simple general analytical expressions are obtained for the Voigt function arising in various fields of physical research. As we will seen, the present formulation yields compact closed-form expressions which enable the ready analytical calculation of the Voigt function. The validity of this approximation is tested by other calculation methods. The series expansion relations established in this work are accurate enough in the whole range of parameters. The convergence rate of the series is estimated and discussed. Some examples of this methodology are presented.
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