High-Energy X-Ray Timing Experiment Detections of Hard X-Ray Tails in Scorpius X-1
作者： Flavio D’Amico , William A. Heindl , Richard E. Rothschild , Duane E. Gruber
DOI: 10.1086/318902
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摘要: We report the detection of a nonthermal hard X-ray component from Sco X-1 based on analysis 20-220 keV spectra obtained with High-Energy X-Ray Timing Experiment board Rossi Explorer satellite. find that addition power-law to thermal bremsstrahlung model is required achieve good fit in five 16 observations analyzed. Using Proportional Counter Array data, we were able track movement source along Z diagram, and found presence tail not confined specific position. However, do observe an indication index hardens increasing , as indicated position diagram. derived luminosities are ~10% for brightest atoll sources.
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