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High resolution VLBI observations of 6.7GHz periodic methanol masers

Published online by Cambridge University Press:  07 February 2024

Mateusz Olech Open the ORCID record for Mateusz Olech [Opens in a new window]
Mateusz Olech*
Affiliation:
Space Radio-Diagnostic Research Center, Faculty of Geoengineering, University of Warmia and Mazury ul. Oczapowskiego 2, 10-719 Olsztyn, Poland.
*
email: mateusz.olech@uwm.edu.pl
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Abstract

In the last 20 years a small group of 6.7GHz methanol maser sources displaying periodic variability have been identified. This variability is thought to reflect local processes linked to star formation. A number of models have been proposed e.g. colliding wind binary, protostellar pulsation, accretion on binary system. Recent studies of known sources as well as non-periodic flaring masers suggest an episodic accretion as a driving mechanism. We present the results of VLBI observation program aimed at studying known periodic methanol maser sources. High resolution maps of emission, source morphology and evolution in time will be discussed. Those results will help us fully understand the nature of maser periodicity in star forming regions.

Keywords

masersstars: formationISM: cloudsradio lines: ISM
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 186 - 188
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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