小质量X射线双星中UV/OPT/NIR与X射线辐射的幂律相关性研究进展  

Research Progress on Power-law Correlation between UV/OPT/NIR and X-ray Emission in Low-Mass X-ray Binaries

作　　者：杨鹏程 张国宝[1,2,3] 杨怡蓉 吕铭[6] 王建成 YANG Peng-cheng;ZHANG Guo-bao;YANG Yi-jung;Lyu Ming;WANG Jian-cheng(Yunnan Observatory,Chinese Academy of Sciences,kunming 650011,China;University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory for structure and Evolution of Celestial Objects,Chinese Academy of Science,kunming 650011,China;Department of Physics,The University of Hong Kong,Pokfulam Road,Hong Kong,China;Laboratory for Space Research,The University of Hong Kong,Hong Kong,China;Department of Physics,Xiangtan University,Xiangtan,411105,China)

机构地区：[1]中国科学院云南天文台,昆明650011 [2]中国科学院大学,北京100049 [3]中国科学院天体结构与演化重点实验室,昆明650011 [4]香港大学物理系,中国香港 [5]香港大学太空研究实验室,中国香港 [6]湘潭大学物理学院,湘潭411105

出　　处：《天文学进展》2022年第4期477-505,共29页Progress In Astronomy

基　　金：国家自然科学基金(U1838116,Y7CZ181002)。

摘　　要：小质量X射线双星系统中的辐射涵盖射电到伽马射线波段。通常认为X射线辐射来自吸积盘内区,射电辐射主要由喷流贡献,而紫外、光学以及近红外(UV/OPT/NIR)辐射可能由多种辐射机制贡献。确定X射线双星系统中UV/OPT/NIR辐射的主导机制可以对吸积过程的研究提供非常重要的信息。分析不同波段辐射流量之间的相关性是一种重要的研究方法。前人通过分析UV/OPT/NIR辐射与X射线辐射之间的幂律相关性,研究了UV/OPT/NIR辐射的主要起源。总结了不同源中存在的幂律相关性的观测结果,并介绍了用于解释UV/OPT/NIR辐射起源的理论模型。Emission from low-mass X-ray binaries(LMXBs)covers a broad range of energies from radio toγ-rays.X-ray emission is typically thought to radiate from the inner region of an accretion flow,and the radio emission is predominantly contributed by a jet.Radiation observed in the ultraviolet(UV),optical(OPT),and near-infrared(NIR)bands may,however,involve a variety of emitting mechanisms.Pinning down the dominant mechanism producing UV/OPT/NIR radiation is still a work in progress.Studying the correlations between emissions at different energies observed during the outbursts of X-ray binaries can provide us valuable information for our understating towards the accretion processes.Researchers prior to us have investigated possible origins of UV/OPT/NIR radiation by analyzing the power-law correlations between UV/OPT/NIR and X-ray.In this paper we review the power-law correlation observed in several X-ray binary sources,and summarize the most probable theoretical models in explaining the origin of the UV/OPT/NIR emission.

关 键 词：小质量X射线双星 吸积黑洞 吸积中子星 UV/OPT/NIR辐射 幂律相关性 

分 类 号：P142.6[天文地球—天体物理]