Publication Date:
2019-07-13
Description:
High-energy X-ray spectra of the Crab Nebula, Cyg- XR-1, and Cen A were determined from observations with the scintillation spectrometer on board the OSO-8 satellite, launched in June, 1975. Each of these sources was observed over two periods of 8 days or more, enabling a search for day-to-day and year to year variations in the spectral and temporal characteristics of the X-ray emission. No variation in the light curve of the Crab pulsar was found from observations which span a 15-day period in March 1976, with demonstrable phase stability. Transitions associated with the binary phase of Cyg XR-1 and a large change in the emission from Con A are reported.
Keywords:
SPACE RADIATION
Type:
NASA-TM-X-71332
,
X-682-77-121
,
ESLAB Symp., Recent Advances in Gamma-Ray Astronomy; May 24, 1977 - May 27, 1977; Frascati; Italy
Format:
application/pdf
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