耀变体的光学偏振研究进展  

Research Advances in Optical Polarization of Blazar

作　　者：郭晓通 王建成[1,2,3] GUO Xiao-tong;WANG Jian-cheng((1.Yunnan Observatories,Chinese Academy of Sciences,Kunming 650216,China;Center for Astro-nomical Mega-Science,Chinese Academy of Sciences,Beijing 100012,China;Key Laboratory for the Structure and Evolution of Celestial Objects,Chinese Academy of Sciences,Kunming 650216,China)

机构地区：[1]中国科学院云南天文台,昆明650216 [2]中国科学院天文大科学研究中心,北京100012 [3]中国科学院天体结构与演化重点实验室,昆明650216

出　　处：《天文学进展》2018年第1期45-56,共12页Progress In Astronomy

基　　金：国家自然科学基金(11133006;11163006;11173054)

摘　　要：耀变体是一类喷流与视线方向近似平行的活动星系核,高偏振是其区别于其他活动星系核的一个典型特征。耀变体的偏振一般认为是由喷流中相对论电子的同步辐射产生的。通过对光学偏振的观测,可以充分约束喷流性质,也给其他波段的光变信息提供补充。主要介绍耀变体光学偏振的研究情况:首先介绍耀变体及其偏振的一些背景;随后介绍耀变体偏振产生的原因、耀变体的去偏振效应、耀变体偏振随波长变化的研究,以及高能耀发与光学偏振相关性研究;最后,对耀变体光学偏振研究进行展望。Blazars are a subclass of active galactic nucleus(AGNs)which have the jet almost aligned with the line of sight.High polarization is a typical feature of blazars which distinguishes them from other AGNs.The polarization of blazars is generally thought to be from the synchrotron radiation of the relativistic electrons in the jet.Optical polarization observations can constrain the jet properties and provide supplement information on the light curve properties in other wavelengths.The paper focuses on the study of the optical polarization of blazars.Firstly,the general background of blazars and their polarization are introduced.Then,the mechanism of the blazar polarization,the depolarization effect,the study of the frequency dependence polarization(FDP)behavior,the correlation between the high-energy flare and the optical polarization are presented.Finally,the prospects of the optical polarization study on blazars are outlined.

关 键 词：耀变体 光学偏振 同步辐射 活动星系核 去偏振 偏振随波长变化 

分 类 号：P157.6[天文地球—天文学]