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Effect of magnetic field on a shock-induced thermal instability

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Abstract

The effect of a magnetic field on a thermal instability has been studied in a radiatively cooling region behind an interstellar shock of moderate propagation velocity (∼ 10 km s−1). It is shown that the presence of a magnetic field of a few microgauss is very effective in preventing the thermal instability from building-up density concentrations. In the absence of the magnetic field, the shock-induced thermal instability will amplify a pre-shock density inhomogeneity by more than an order of magnitude. However, in the field's presence, the amplified density contrast is shown to be only a factor 2. Implications for the ‘trace of a sweeping broom’ in the Pleiades nebula are discussed.

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References

  • Aannestad, P. A.: 1973,Astrophys. J. Suppl. 25 223.

    Google Scholar 

  • Allen, C. W.: 1973,Astrophysical Quantities, 3rd ed., Athlone Press, London.

    Google Scholar 

  • Arny, T.: 1977,Astrophys. J. 217, 83.

    Google Scholar 

  • Federman, S. R.: 1982,Astrophys. J. 253, 601.

    Google Scholar 

  • Field, G. B.: 1965,Astrophys. J.,142, 531.

    Google Scholar 

  • Field, G. B., Rather, J. D. G., Aannestad, P. A., and Orszag, S. A.: 1968,Astrophys. J. 151, 953.

    Google Scholar 

  • McCray, R., Stein R. F., and Kafatos, M.: 1975,Astrophys. J. 196, 565.

    Google Scholar 

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Authors and Affiliations

  1. Dept. of Astronomy, Seoul National University, Korea

    Seung Soo Hong

  2. Space Astronomy Laboratory, University of Florida, USA

    Seung Soo Hong

  3. National Astronomical Observatory, and Dept. of Astronomy, Seoul National University, Korea

    Bon Chul Koo

Authors
  1. Seung Soo Hong
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  2. Bon Chul Koo
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Hong, S.S., Koo, B.C. Effect of magnetic field on a shock-induced thermal instability. Astrophys Space Sci 119, 141–142 (1986). https://doi.org/10.1007/BF00648832

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  • DOI: https://doi.org/10.1007/BF00648832

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