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Astron. Astrophys. 331, 1099-1102 (1998)

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Magnetic ionization fronts

I. Parallel magnetic fields

M.P. Redman 1, 2, R.J.R. Williams 2, J.E. Dyson 2, T.W. Hartquist 3 and B.R. Fernandez 1

1 Department of Physics and Astronomy, University of Manchester, UK
2 Department of Physics and Astronomy, University of Leeds, UK
3 Max-Planck-Institut für extraterrestrische Physik, D-85740 Garching, Germany

Received 16 January 1997 / Accepted 24 October 1997


We solve the continuity equations across an ionization front. By including a plane parallel magnetic field we find significant differences in the allowed velocities of the R- and D-type solutions between the magnetized and non-magnetized cases. These results may have implications for the study of ionization bounded diffuse sources where a moderate or strong magnetic field is expected.

Key words: MHD – ISM: clouds – H ii regions – ISM: magnetic fields

Send offprint requests to: M.P. Redman

© European Southern Observatory (ESO) 1998

Online publication: March 3, 1998