费米耀变体多波段辐射流量相关性研究  

The Correlations of Multi-wavelength Emissions from Fermi Blazars

作　　者：李斯[1] 王艳芳[1] 龙光波 郑永刚[1] 

机构地区：[1]云南师范大学物理与电子信息学院,云南昆明650500

出　　处：《云南师范大学学报（自然科学版）》2015年第6期1-7,共7页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：云南省中青年学术和技术带头人后备人才计划资助项目(2012HB014);云南省自然科学基金资助项目(2013FD014);云南省教育厅基金重点资助项目(2012Z016)

摘　　要：收集了818个费米耀变体样本源(包括327个BL Lac天体和491个FRSQs)的射电辐射流量FR、X射线辐射流量FX、γ射线辐射流量Fγ以及相关的物理参量,并根据同步辐射峰值频率νSpeak将样本源分为高同步辐射峰频耀变体(HSP)、中同步辐射峰频耀变体(ISP)和低同步辐射峰频耀变体(LSP)三种类型.分别对HSP、ISP和LSP的射电、X射线和γ射线辐射流量之间的相关性进行统计分析,得到以下结论:(1)对于HSP和ISP,Fγ和FR之间存在显著的线性相关,而对于LSP,Fγ和FR之间仅有低度线性相关;(2)在HSP、ISP和LSP中,Fγ和FX之间均存在低度线性相关性;(3)在HSP中,FR和FX之间存在低度线性相关性,在ISP中,FR和FX之间没有相关性,而在LSP中,FR和FX之间则表现为显著线性相关.上述研究结果与Fan和Dondi利用高能γ射线实验望远镜(EGRET)观测到的数据研究结果一致.另外,上述研究结果表明费米γ射线辐射主要产生于同步自康普顿(SSC)过程.In this paper, we compile the radio emission flux FR, X-ray emission flux Fx, T-ray emission flux Fγ and some other physical parameters of 818 Fermi blazars （including 327 BL Lac and 491 FRSQs）. Based on the synchrotron peak frequency vSae, we categorize the sample as high- synchrotron-peaked blazar（HSP）,intermediate-synchrotron-peaked blazar（ISP）and low-synchrotron- peaked blazar （LSP）. We analyze the correlations of Multi-wavelength Emissions. Our results show that：（1）there is a significantly correlation between Fγ and FR in the HSP and the ISP,but a weak correlation exist in LSP;（2）a weak correlation in found between Fγ and Fx in the HSP, the ISP and the LSP; （3）for the HSP, there is a weak correlation between FR and Fx;in the ISP,there is no correlation between them; but a significantly correlation between FR and Fx exist in LSP. These are in agreement with the Dondi＇s and Fan＇s results that is deduced from the En- ergetic Gamma Ray Experiment Telescope（EGRET） data. Our results suggest that the Fermi γ- ray derives from the synchrotron self-Compton（SSC） process.

关 键 词：耀变体 辐射 相关分析 

分 类 号：P157[天文地球—天文学]