Magnetic ionization fronts – II. Jump conditions for oblique magnetization |
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Authors: | R J R Williams J E Dyson T W Hartquist |
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Institution: | Department of Physics and Astronomy, Cardiff University, PO Box 913, Cardiff CF24 3YB; Department of Physics and Astronomy, The University, Leeds LS2 9JT |
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Abstract: | We present the jump conditions for ionization fronts with oblique magnetic fields. The standard nomenclature of R- and D-type fronts can still be applied, but in the case of oblique magnetization there are fronts of each type about each of the fast- and slow-mode speeds. As an ionization front slows, it will drive first a fast- and then a slow-mode shock into the surrounding medium. Even for rather weak upstream magnetic fields, the effect of magnetization on ionization front evolution can be important. |
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Keywords: | MHD H ii regions ISM: kinematics and dynamics ISM: magnetic fields |
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