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1 results

  • High resolution magnetic field measurements in high-mass star-forming regions using masers

  • Gabriele Surcis, Wouter H. T. Vlemmings, Huib J. van Langevelde, Busaba Hutawarakorn Kramer
  • Journal:
    Proceedings of the International Astronomical Union / Volume 8 / Issue S287 / January 2012
    Published online by Cambridge University Press:
    24 July 2012, pp. 69-73
    Print publication:
    January 2012
    • Article
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  • The bright and narrow spectral line emission of masers is ideal for measuring the Zeeman-splitting as well as for determining the orientation of magnetic fields in 3-dimensions around massive protostars. Recently, polarization observations at milliarcsecond resolution of 6.7-GHz CH3OH masers have uniquely been able to resolve the morphology of magnetic fields close to massive protostars. The observations reveal that the magnetic fields are along outflows and/or on the surfaces of circumstellar tori. Here we present three different examples selected from a total number of 7 massive star-forming regions that were investigated at 6.7-GHz with the EVN in the last years.