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

G. Surcis ; Wouter Vlemmings (Institutionen för rymd- och geovetenskap, Radioastronomi och astrofysik) ; H.J. van Langvelde ; B. Hutarawarakorn Kramer
Proceedings of the International Astronomical Union; Cosmic Masers - from OH to Ho (1743-9213). Vol. 8 (2012), S287, p. 69 - 73.
[Konferensbidrag, övrigt]

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.

Nyckelord: Stars:formation; masers:methanol; polarization


Gabriele Surcis, Wouter H. T. Vlemmings, Huib J. van Langevelde and Busaba Hutawarakorn Kramer (2012). High resolution magnetic field measurements in high-mass star-forming regions using masers. Proceedings of the International Astronomical Union, 8, pp 69-73 doi:10.1017/S1743921312006667



Denna post skapades 2012-10-31. Senast ändrad 2015-08-13.
CPL Pubid: 165345

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Radioastronomi och astrofysik (2010-2017)

Ämnesområden

Astronomi, astrofysik och kosmologi

Chalmers infrastruktur