Continuous observations of long-term variations in cosmic X-ray sourcesResults are reported for the Charged Particle Measurements Experiment which was conducted on board IMP-7 to detect X-ray fluxes from the sun, the galactic center, Tau X-1, and Sco X-1 over a nine-month period. Autocorrelation analysis of the data indicates a probable 80-day periodicity in the flux from Sco X-1, a 110-day periodicity in the flux from the galactic center, no periodicities in the flux from Tau X-1, and a strong 27-day periodicity in the solar X-ray flux. A transient event detected within the cluster of sources constituting the galactic center is reported which lasted about two months and had a flux roughly equal to the regular flux from this area. It is noted that this was the only transient event detected in the whole area under continuous observation for the duration of the experiment.
Document ID
19750051491
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Wende, C. D. (NASA Goddard Space Flight Center Greenbelt, Md., United States)
Krimigis, S. M.
Kohl, J. W. (Johns Hopkins University Silver Spring, Md., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Space Radiation
Meeting Information
Meeting: International Conference on X-Rays in Space - Cosmic, Solar, and Auroral X-Rays, Calgary