摘要
对欧洲γ天文卫星COS-B数据的分析迄今未能发现在天鹅座X-3位置上存在着γ射线点源,从1977年6月到1980年6月,COS-B对Cyg-X天区进行了三次观测,各次观测的主要参数见表1,在第22次观测和第36次观测期间,天鹅区X-3大部分时间处于X辐射低态,各自只有6天左右处于高态;在第51次观测期间,大部分时间为X辐射高态,只有7天左右处于低态。
Analysing result of the simultaneous observed data of X-rays and gamma-rays by the ESA satellite COS-B indicates that there exists a negative correlation between intensities of 2-12 keV X-rays and 150-5000 MeV gamma-rays of Cyg X-3. A clear gamma-ray image of Cyg X-3 is obtained from the spatial distribution of incident gamma-ray photons when Cyg X-3 was. in a low state of X-ray emission between June 1977 and June 1980, and the corresponding gamma-ray flux of Cyg X-3 is derived as, F(E>100 MeV)-1×10-6cm-2s-1.
基金
国家自然科学基金
