86 GHz aperture synthesis observations of the Galactic center

Details 86 GHz aperture synthesis observations of the Galactic center 86 GHz aperture synthesis observations of the Galactic center

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aipc..155..133w&link_type=abstract

AIP Conference Proceedings, Volume 155, pp. 133-137 (1987).

Computer Science

20

Scientific paper

We present 86 GHz aperture synthesis observations of the radio continuum with 4`×8` angular resolution in the central 5 pc of the Galaxy. From a comparison with maps with comparable resolution at 1.4, 5, 15, and 24 GHz we have derived the distribution of thermal and non-thermal emission. The central radio source has a flux density 1.0+/-0.15 Jy between 1.4 and 86 GHz. The western arc is the inner ionized edge of the 2 pc radius molecular ring and can be traced around the western half of the ring. The central bar feature contains both thermal and non-thermal components. The apparent thermal spectral index between 1.4 and 5 GHz is due to a blend of non-thermal and optically thick thermal emission.

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