Detection of Multiple Hard X-ray Flares from Sco X-1 with OSSE

摘要: CGRO/OSSE observations of the bright LMXB Sco X-1 have resulted in discovery transient episodes hard X-ray emission extending to energies above 200 keV. During these periods, spectrum 80 keV deviates significantly from extrapolation soft thermal observed at lower energies. The intervals last ∼4-days with a duty cycle ∼30%. Using RXTE/ASM data same establish state on color-color diagram “Z” is progress, but preliminary results indicate that occur over limited range mass accretion rates.