Periodic outbursts in the 6.7GHz methanol maser line towards G22.356+0.066

Details Periodic outbursts in the 6.7GHz methanol maser line towards G22.356+0.066 Periodic outbursts in the 6.7GHz methanol maser line towards G22.356+0.066

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..280p.344s&link_type=abstract

The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Tole

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the discovery of periodic variations of the 6.7GHz methanol maser flux in source G22.356+0.066. The data were taken with the Torun 32m telescope as a part of monitoring programme of a large sample of high mass star forming regions. The methanol outbursts have a periodicity of ~178 days and a duration at half maximum of ~25 days. Time shifts between the flux curves from different features in the spectrum are clearly seen. The shape of the light curve suggests a periodic pumping radiation field modulated by changes in the accretion rate onto a binary system.

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