Origin of power-law X-ray emission in the steep power-law state of X-ray binaries

作     者：Li-Hong Yan Jian-Cheng Wang 

作者机构：Yunnan Observatory /National Astronomical ObservatoriesKey Laboratory for the Structure and Evolution of Celestial ObjectsChinese Academy of SciencesKunming 650011China Graduate School of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2011年第11卷第6期

页      面：631-636页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 070401[理学-天体物理] 0803[工学-光学工程] 0704[理学-天文学] 

基　　金：support from the National Natural Science Foundation of China (No. 10778702) the National Basic Research Program of China (973 Program 2009CB824800) the Policy Research Program of the Chinese Academy of Sciences (KJCX2-YW-T24) 

主　　题：accretion accretion disks-black hole physics-radiation mechanisms:nonthermal-X-rays:binaries 

摘      要：We present a new explanation for the origin of the steep power-law（SPL） state of X-ray *** power-law component of X-ray emission is the synchrotron radiation of relativistic electrons in highly magnetized compact spots orbiting near the inner stable circular orbit of a black *** has a hard spectrum that extends to above MeV energies,which is determined by the electron acceleration *** photons are then down-scattered by the surrounding plasma to form an observed steep *** discuss the relevance of the model to high-frequency quasi-periodic oscillations and the extremely high luminosity of the SPL state.