Relativistic Thermal Bremsstrahlung Gaunt Factor for the Intracluster Plasma. II. Heavy Elements

Details Relativistic Thermal Bremsstrahlung Gaunt Factor for the Intracluster Plasma. II. Heavy Elements Relativistic Thermal Bremsstrahlung Gaunt Factor for the Intracluster Plasma. II. Heavy Elements

1998-04-21

arxiv.org/abs/astro-ph/9804204v1

Astronomy and Astrophysics

Astrophysics

15 pages + 2 tables + 3 figures, LaTeX with AASMS macro, Submitted to Astrophysical Journal for publication

Scientific paper

We calculate the relativistic thermal bremsstrahlung Gaunt factor for the high-temperature plasma which exists in clusters of galaxies. We calculate the Gaunt factor by employing the Bethe-Heitler cross section corrected by the Elwert factor. The calculations in this paper are made for the fully ionized plasma for the following cases: Z = 10 (Ne), 12 (Mg), 14 (Si), 16 (S), 26 (Fe). We also calculate the Gaunt factor by using the Coulomb-distorted wave functions for nonrelativistic electrons following the method of Karzas and Latter. By comparing the Gaunt factors calculated by these two different methods, we carefully assess the accuracy of the calculation. We present the numerical results in the form of tables.

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