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Interferometric Observations of the OH Emission from W49

Published online by Cambridge University Press:  25 April 2016

V. Radhakrishnan
Affiliation:
Division of Radiophysics, CSIRO, Sydney
J. B. Whiteoak
Affiliation:
Division of Radiophysics, CSIRO, Sydney

Extract

The high intensity anomalous OH emission which has been detected in the neighbourhood of HII regions exhibits remarkable polarization characteristics, narrow spectral features, and unusual ratios of line strengths. All of these unusual properties are generally believed to be attributable to maser action of some form. A knowledge of the structure of the emitting regions and their brightness temperature is necessary for the development of a satisfactory theory of the emission mechanism.

Type
Contributions
Copyright
Copyright © Astronomical Society of Australia 1967

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