X-Ray and Optical Variations of Scorpius X-1
Abstract
Satellite measurements of the X-ray intensity of Sco X-1 are presented for two periods of a proximately 4 hours each. On 1969 August 2, simultaneous optical and X-ray observations (at 3-12 keV were made during an optical flare. The X-ray flux at the time of the flare was at least a factor of 2.5 greater than the preflare minimum. On 1969 October 17 large and rapid changes in the X-ray intensity were observed with identical detectors on two Vela 5 satellites. The variations in X-ray flux during this time were similar to the fluctuations in optical brightness that have been reported.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1970
- DOI:
- 10.1086/180636
- Bibcode:
- 1970ApJ...162L.115E