Abstract
SMALL-SCALE radio structure within Sgr A, the source identified with the galactic centre, is of great interest because of the recent discovery of similar structure in the infrared1 and because of current speculation on black holes in the galactic nucleus2. In this communication we describe new observations of Sgr A with the Cambridge 1 mile telescope at frequencies of 2.7 and 5 GHz. The beamwidths in right ascension were respectively 11 and 6 arcsec, the best of these being the highest resolution yet applied to the galactic centre. The observations suggest a three component model for Sgr A, and confirm the existence of radio structure on a scale of 10 arcsec. The relation of these compact radio sources to the infrared emission is also examined.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Rieke, G. H., and Low, F. J., Nature (in the press).
Lynden-Bell, D., and Rees, M. J., Mon. Not. Roy. Astron. Soc., 152, 461 (1971).
Lequeux, J., Ann. d' Astrophys., 25, 221 (1962).
Moffet, A. T., and Maltby, P., Astrophys. J. Suppl. Ser., 7, 93 (1962).
Fomalont, E. B., Astrophys. J. Supp. Ser., 15, 203 (1968).
Macdonald, G. H., thesis, Univ. Cambridge (1968).
Little, A. G., Symposium on Radio and Optical Studies of the Galaxy, 113 (Mount Stromlo Observatory, 1966).
Thompson, A. R., Riddle, A. C., and Lang, K. R., Astrophys. Lett., 3, 49 (1969).
Lipovka, N. M., Astron. Zh. (USSR), 48, 260 (1971).
Maxwell, A., and Taylor, J. H., Astrophys. Lett., 2, 191 (1968).
Reifenstein, E. C., Wilson, T. L., Burke, B. F., Mezger, P. G., and Altenhoff, W. J., Astron. Astrophys., 4, 357 (1970).
Wynn-Williams, C. G., Mon. Not. Roy. Astron. Soc., 151, 397 (1971).
Rosenberg, I., Mon. Not. Roy. Astron. Soc., 151, 109 (1970).
Kleinmann, D. E., and Low, F. J., Astrophys. J., 149, L1 (1967).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
DOWNES, D., MARTIN, A. Compact Radio Sources in the Galactic Nucleus. Nature 233, 112–114 (1971). https://doi.org/10.1038/233112a0
Received:
Issue Date:
DOI: https://doi.org/10.1038/233112a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
