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Masers in accretion burst sources

Published online by Cambridge University Press:  07 February 2024

Olga Bayandina Open the ORCID record for Olga Bayandina [Opens in a new window] ,
Agnieszka Kobak Open the ORCID record for Agnieszka Kobak [Opens in a new window] ,
Alessio Caratti o Garatti ,
Alexander Tolmachev ,
Alexandr Volvach ,
Alexei Alakoz ,
Alwyn Wootten ,
Anastasia Bisyarina ,
Andrews Dzodzomenyo  and
Andrey Sobolev
...Show all authors
Olga Bayandina*
Affiliation:
INAF - Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy.
*
email: olga.bayandina@inaf.it
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Abstract

Recently, remarkable progress has been made in understanding the formation of high mass stars. Observations provided direct evidence that massive young stellar objects (MYSOs), analogously to low-mass ones, form via disk-mediated accretion accompanied by episodic accretion bursts, possibly caused by disk fragmentation. In the case of MYSOs, the mechanism theoretically provides a means to overcome radiation pressure, but in practice it is poorly studied - only three accretion bursts in MYSOs have been caught in action to date. A significant contribution to the development of the theory has been made with the study of masers, which have proven to be a powerful tool for locating “bursting” MYSOs. This overview focuses on the exceptional role that masers play in the search and study of accretion bursts in massive protostars.

Keywords

Stars: formationMasers
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. 152 - 158
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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