Maser polarization and magnetic fields

Wouter Vlemmings
Argelander Institute for Astronomy

Maser emission offers a unique opportunity to study the environment of high-mass star-formation at extremely high resolution. Masers are uniquely suited for the study of magnetic field in high density regions. While observations of OH maser polarization are fairly commonplace, water maser polarimetric observations, probing the highest densities, are still fairly rare. In this talk I will present recent results of interferometric polarization observations of water and methanol masers and discuss their importance for studying magnetic fields during high-mass star-formation.