Methanol masers probing the ordered magnetic field of W75N
G. Surcis, W.H.T. Vlemmings, R. Dodson, and H.J. van Langevelde

TL;DR
This study uses high-resolution methanol maser polarization observations to reveal a strongly ordered magnetic field aligned with the outflow in the high-mass star-forming region W75N, providing insights into magnetic influence during star formation.
Contribution
First high-resolution polarization measurements of 6.7 GHz methanol masers in W75N, showing magnetic field structure and strength near a high-mass protostar.
Findings
Magnetic field is tightly ordered over 2000 AU around VLA1.
Magnetic field aligns with the large-scale bipolar outflow.
Magnetic field strength is approximately 50 mG, indicating dynamical importance.
Abstract
The role of magnetic fields during the protostellar phase of high-mass star-formation is a debated topic. In particular, it is still unclear how magnetic fields influence the formation and dynamic of disks and outflows. Most current information on magnetic fields close to high-mass protostars comes from H2O and OH maser observations. Recently, the first 6.7 GHz methanol maser polarization observations were made, and they reveal strong and ordered magnetic fields. The morphology of the magnetic field during high-mass star-formation needs to be investigated on small scales, which can only be done using very long baseline interferometry observations. The massive star-forming regionW75N contains three radio sources and associated masers, while a large-scale molecular bipolar outflow is also present. Polarization observations of the 6.7 GHz methanol masers at high angular resolution probe…
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