Ultra-precise monitoring of a class I methanol maser
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Ultra-precise monitoring of a class I methanol maser
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| Автор |
Voronkov, M. A.
Breen, S. L. Ellingsen, S. P. Green, J. A. Sobolev, A. M. Yu, Parfenov, S. Van, Der, Walt, D. J. |
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| Тематика |
HII REGIONS
MASERS STARS: FORMATION |
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| Описание |
We report the results of a 7-year monitoring program using the Australia Telescope Compact Array (ATCA) for the 9.9 GHz class I methanol maser in G331.13-0.24 where a periodic class II methanol maser is present. The great deal of the project was to control systematics at an unprecedented level. Although no periodic flux variation was found, the maser shows a very stable decline of 166±7 Jy/day. The radial velocity of the maser is stable down to 1 m/s level. We also report a marginal periodic signal in radial velocity (comparable to the level of systematics) of about 20±7 cm/s with the period of 475±22 days, close to that of the 6.7-GHz maser in the source. No hyperfine split was detected which suggests preferential excitation of a single hyperfine transition. © The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union.
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| Дата |
2024-04-08T11:07:11Z
2024-04-08T11:07:11Z 2022 |
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| Тип |
Conference paper
Conference object (info:eu-repo/semantics/conferenceObject) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Voronkov, MA, Breen, SL, Ellingsen, SP, Green, JA, Sobolev, AM, Parfenov, SY & Van Der Walt, DJ 2022, 'Ultra-precise monitoring of a class I methanol maser', Proceedings of the International Astronomical Union, Том. 18, № S380, стр. 255-257. https://doi.org/10.1017/S1743921323001941
Voronkov, M. A., Breen, S. L., Ellingsen, S. P., Green, J. A., Sobolev, A. M., Parfenov, S. Y., & Van Der Walt, D. J. (2022). Ultra-precise monitoring of a class I methanol maser. Proceedings of the International Astronomical Union, 18(S380), 255-257. https://doi.org/10.1017/S1743921323001941 1743-9213 Final All Open Access; Hybrid Gold Open Access https://www.cambridge.org/core/services/aop-cambridge-core/content/view/74F557538B668DC3FA4593DD26AC9998/S1743921323001941a.pdf/div-class-title-ultra-precise-monitoring-of-a-class-i-methanol-maser-div.pdf https://www.cambridge.org/core/services/aop-cambridge-core/content/view/74F557538B668DC3FA4593DD26AC9998/S1743921323001941a.pdf/div-class-title-ultra-precise-monitoring-of-a-class-i-methanol-maser-div.pdf http://elar.urfu.ru/handle/10995/131422 10.1017/S1743921323001941 85185759344 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
Cambridge University Press
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| Источник |
Proceedings of the International Astronomical Union
Proceedings of the International Astronomical Union |
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