Radio structure of the galactic centre region

ABSTRACT RADIO observations have shown that the galactic centre region consists of a number of discrete sources. The brightest of these, Sagittarius _A_, is believed to represent the

galactic nucleus. This communication describes a new series of observations of the region, made at frequencies of 8.25 and 15.50 Gc/s with a pencil-beam antenna. The angular resolutions were

respectively 4.2 and 2.2 arc min, the latter being the highest pencil-beam resolution so far applied to the galactic centre region. The observations confirm that the microwave spectrum of

Sagittarius _A_ is non-thermal1, show that the angular diameter of the source is approximately 3.5 arc min, and demonstrate that, adjacent to Sagittarius _A_, there is an irregular emission

region, which is apparently thermal in nature. The relation between radio data concerning the galactic centre and optical information about the centres of nearby normal galaxies is also

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(1963). Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Harvard Radio Astronomy Station, Fort Davis, Texas D. DOWNES & A. MAXWELL * Massachusetts Institute of

Technology, Lincoln Laboratory, Lexington, Massachusetts M. L. MEEKS Authors * D. DOWNES View author publications You can also search for this author inPubMed Google Scholar * A. MAXWELL

View author publications You can also search for this author inPubMed Google Scholar * M. L. MEEKS View author publications You can also search for this author inPubMed Google Scholar RIGHTS

AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE DOWNES, D., MAXWELL, A. & MEEKS, M. Radio Structure of the Galactic Centre Region. _Nature_ 208, 1189–1190

(1965). https://doi.org/10.1038/2081189a0 Download citation * Issue Date: 18 December 1965 * DOI: https://doi.org/10.1038/2081189a0 SHARE THIS ARTICLE Anyone you share the following link

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