Abstract
INTERFEROMETRIC1,2 and lunar occultation3–5 observations show that the radio source Sgr A, which is located near the galactic centre, consists of several components varying in size from a few arc s to a few arc min. Lunar occultation observations made at Ootacamund on September 9, 1970, have provided detailed information on the structure of the source of 327 MHz and have revealed the presence of an extended component 10 × 4 arc min in size and centred approximately on Sgr A. The extended source has an inclination of 45° ± 15° to the galactic plane, similar to that of the 20 cm continuum ridges6.
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
Downes, D., and Martin, A. H. M., Nature, 233, 112 (1971).
Ekers, R. D., and Lynden-Bell, D., Astrophys. Lett., 9, 189 (1971).
Thompson, A. R., Riddle, A. C., and Lang, K. R., Astrophys. Lett., 3, 49 (1969).
Sandqvist, A., thesis, Univ. Maryland (1971).
Maxwell, A., and Taylor, J. H., Astrophys. Lett., 2, 191 (1968).
Kerr, F. J., and Sinclair, M. W., Nature, 212, 166 (1966).
Swarup, G., Sarma, N. V. G., Joshi, M. N., Kapahi, V. K., Bagri, D. S., Damle, S. H., Ananthakrishnan, S., Balasubramanian, V., Bhave, S. S., and Sinha, R. P., Nature Physical Science, 230, 185 (1971).
Downes, D., and Maxwell, A., Astrophys. J., 146, 653 (1966).
Broten, N. W., Cooper, B. F. C., Gardner, F. F., Minnet, H. C., Price, R. M., Tonking, F. G., and Yabsley, D. E., Austral. J. Phys., 18, 85 (1965).
Downes, D., Maxwell, A., and Meeks, M. L., Nature, 208, 1189 (1965).
Pariiskii, Y. N., Soviet Phys. Dokl., 4, 1172 (1959).
Gardner, F. F., and Whiteoak, J. B., Astrophys. Lett., 10, 171 (1972).
Becklin, E. E., and Neugebauer, G., Astrophys. J., 151, 145 (1968).
Dulk, G. A., Astrophys. Lett., 7, 137 (1970).
Brezgunov, V. N., Dagkesamansky, R. D., and Udal'tsov, V. A., Astrophys. Lett., 9, 117 (1971).
Mezger, P. G., and Hoglund, B., Astrophys. J., 147, 490 (1967).
Dravskih, A. F., Dravskih, Z. V., Turevskij, V. M., and Solonikov, A. A., Astr. Cirk. Izdav. Bjuro Astr. Soobsc. Kazan, No. 354 (1966).
Riegel, K. W., and Kilston, S. D., Astrophys. J., 159, L155 (1970).
Baars, J. W. M., Mezger, P. G., and Wendker, H., Z. Astrophys., 61, 134 (1965).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
KRISHNA, G., SWARUP, G., SARMA, N. et al. Occultation of Sgr A. Nature 239, 91–93 (1972). https://doi.org/10.1038/239091a0
Received:
Issue Date:
DOI: https://doi.org/10.1038/239091a0
This article is cited by
-
Large, highly organized radio structures near the galactic centre
Nature (1984)
-
Comparative geochemistry of volcanics from rift valleys, transform faults and aseismic ridges
Contributions to Mineralogy and Petrology (1976)
-
Observations of Sgr A at 160 MHz with 1.9 arc min resolution
Nature (1974)
-
Petrology of the Ninety East Ridge (Indian Ocean) compared to other aseismic ridges
Contributions to Mineralogy and Petrology (1974)
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.