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Discovery of circular polarization of the 6.7 GHz methanol maser in G33.641-0.228

Published online by Cambridge University Press:  07 February 2024

Kenta Fujisawa Open the ORCID record for Kenta Fujisawa [Opens in a new window]
Kenta Fujisawa*
Affiliation:
The Research Institute of Time Studies, Yamaguchi University, Yamaguchi, Yamaguchi 753-8511, Japan.
*
email: [email protected]
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Abstract

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The 6.7 GHz methanol maser emitted by a high-mass star forming region G33.641-0.228 is known to exhibit fast flux density variability on timescales of less than one day. The mechanism of this variability, called burst, has not been known. We observed the circular polarization of this maser. As a result, we found that only the spectral components representing burst exhibit strong circular polarization exceeding 10%. This suggests that the two phenomena of the burst and circular polarization are related to each other.

Keywords

ISM:jets and outflowsaccretion disksstars: massivestars: protostars
Type
Poster 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. 216 - 217
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

References

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