Polarization of the Recombination Line Maser in MWC349
Abstract
We present observations of the circular polarization of the recombination line maser in MWC 349. Six good quality Ha30α spectra were obtained during 2010 - 2011 which show that the Zeeman features are complex, time variable, and usually different for the blue- and red-shifted maser spikes. We propose that the magnetic field, located in the corona of the circumstellar disk, has toroidal and radial components. It is plausibly generated in a disk dynamo.
- Publication:
-
Cosmic Masers - from OH to H0
- Pub Date:
- July 2012
- DOI:
- 10.1017/S174392131200662X
- Bibcode:
- 2012IAUS..287...49T
- Keywords:
-
- stars: individual (MWC 349);
- stars: magnetic fields;
- stars: winds;
- outflows