Detection of new methanol maser transitions associated with G358.93-0.03

Abstract

We report the detection of new 12.178, 12.229, 20.347, and 23.121 GHz methanol masers in the massive star-forming region G358.93-0.03, which are flaring on similarly short timescales (days) as the 6.668 GHz methanol masers also associated with this source. The brightest 12.178 GHz channel increased by a factor of over 700 in just 50 d. The masers found in the 12.229 and 20.347 GHz methanol transitions are the first ever reported and this is only the fourth object to exhibit associated 23.121 GHz methanol masers. The 12.178 GHz methanol maser emission appears to have a higher flux density than that of the 6.668 GHz emission, which is unusual. No associated near-infrared flare counterpart was found, suggesting that the energy source of the flare is deeply embedded.

9 pages, 3 figures, 2 tables, Published in MNRAS

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Cited by in corpus (17)

• A heat-wave of accretion energy traced by masers in the G358-MM1 high-mass protostar
• The Extraordinary Outburst in the Massive Protostellar System NGC6334I-MM1: Strong Increase in Mid-Infrared Continuum Emission
• A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar
• Parameter study for the burst mode of accretion in massive star formation
• Accretion bursts in high-mass protostars: a new testbed for models of episodic accretion
• Water maser variability in a high-mass YSO outburst -- VERA and ALMA observations of S255 NIRS 3
• A multi-transition methanol maser study of the accretion burst source G358.93-0.03-MM1
• The accretion burst of the massive young stellar object G323.46 -0.08
• The evolution of the H2O maser emission in the accretion burst source G358.93-0.03
• The Extraordinary Outburst in the Massive Protostellar System NGC6334I-MM1: Spatio-kinematics of Water Masers during a Contemporaneous Flare Event
• Ammonia masers toward G358.931-0.030
• The methanol emission in the $J_1-J_0$ A${}^{-+}$ line series as a tracer of specific physical conditions in high-mass star-forming regions
• Spectral survey of a Hot core with an Eruptive Accretion in S255IR NIRS3 (SHEA): The discovery of class I and class II millimeter methanol maser transitions
• Massive Protocluster of a Periodic Maser Source G188.95+0.89
• Observations of 12.2 GHz methanol masers towards northern high-mass protostellar objects
• Polarization properties of methanol masers
• Infrared observations of the flaring maser source G358.93-0.03 -- SOFIA confirms an accretion burst from a massive young stellar object