Abstract
FRYE et al.1 have reported evidence for a point source of γ-rays, Sgr γ-1, with an intensity Isgrγ–1 (> 50 MeV) = (3 ± 1) × 10−5 photons cm−2 s−1. It was seen in two separate balloon flights in February 1969 at a significance level of about three standard deviations of the background rate. Frye et al. give the coordinates of the source as right ascension = 19 h 12 m ± 12 m and declination = −35° ± 2°.
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 SpringerLink
- 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
Frye, jun., G. M., Staib, J. A., Zych, A. D., Hopper, V. D., Rawlinson, W. R., and Thomas, J. A., Nature, 223, 1320 (1969).
Bradt, H., Naranan, S., Rappaport, S., and Spada, G., Astrophys. J., 152, 1005 (1968).
Boldt, E. A., Desai, U. D., and Holt, S. S., Astrophys. J., 156, 427 (1969).
Frye, jun., G. M., and Wang, C. P., Astrophys. J., 158, 925 (1969).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
NARANAN, S. Upper Limit on the Intensity of Sgr γ-1 in Soft X-rays. Nature 226, 333 (1970). https://doi.org/10.1038/226333a0
Received:
Issue date:
DOI: https://doi.org/10.1038/226333a0
