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| Nature 232, 246 (23 July 1971); doi:10.1038/232246a0 |
|
Physical Sciences: Detection of Radio Emission from Cygnus X-1
L. L. E. BRAES & G. K. MILEY
Leiden Observatory, Leiden 2401
THE X-ray source Cyg X-1 is known to be highly variable and recently has been found to pulsate with a period of 73 ms (ref. 1). Here we report the detection of its radio counterpart at a frequency of 1,415 MHz.
| 1. | Oda, M., Gorenstein, P., Gursky, H., Kellogg, E., Schreier, E., Tananbaum, H., and Giacconi, R., Astrophys. J. Lett., 166, L1 (1971). |
| 2. | Hjellming, R. M., and Wade, C. M., Astrophys. J. Lett., 164, L1 (1971). |
| 3. | Braes, L. L. E., and Miley, G. K., Astron. Astrophys. (in the press). |
© 1971 Nature Publishing Group
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