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VARIABILITY OF CLASS II METHANOL MASERS IN THE 3 mm WAVE RANGE

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A survey of known methanol masers at 6.7 and 12.2 GHz was performed in the 31-40 A + methanol line at 107.0 GHz. Maser emission was detected only towards already known sources. The masers at 107.0 GHz are observed towards the strongest sources at 6.7 GHz, but not necessarily towards the strongest maser features in these sources. The comparison with previous results showed that the 107.0 GHz maser in Cep A is variable.
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Keywords: Methanol masers; Molecules; Variability

Document Type: Research Article

Affiliations: 1: Astro Space Center of Lebedev's Physical Institute, Profsoyuznaya, 84/32, Moscow 117997, Russia 2: Onsala Space Observatory, S-439 92, Onsala, Sweden

Publication date: 2002-01-01

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