The 78.4 day period of Cygnus XR-1
Abstract
A search for a 78.4 day modulation in the high energy X-ray flux observed with OSO-8 and in the U-band optical polarization is reported. It is suggested that if such a modulation does exist, it is more likely to be related to the rotation of the free modes of oscillation of the primary than to the existence of a third body in the system.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1979
- Bibcode:
- 1979STIN...7918860D
- Keywords:
-
- Cygnus Constellation;
- Periodic Variations;
- X Ray Astronomy;
- Amplitude Modulation;
- Emission Spectra;
- Oso-8;
- Power Spectra;
- Ultraviolet Photometry;
- Astronomy