BL Lac天体多波段高能辐射特性研究  

Research on the Multiband High-Energy Radiation Characteristics of BL Lac Objects

作　　者：俞效龄 张雄[1] 熊定荣[1] 茶永娟[1] 陈永云[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）》2014年第1期21-25,共5页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金重点资助项目(U1231203);云南引力理论创新团队及云南省高校高能天体物理创新团队资助项目

摘　　要：从文献中收集了同时期观测到的51个BL Lac天体(被费米卫星探测到)的多波段数据,应用相关性分析的方法研究了射电5GHz、中红外波长分别为3.4μm、4.6μm、12μm、22μm的四个波段(分别称为W1-W4波段)和伽马射线流量的相关性,研究了射电5GHz、中红外的四个波段和伽马射线光度的相关性,得到以下结论:Fγ和FR之间、Fγ和FIR之间具有显著的相关性,表明费米BL Lac天体的高能伽马辐射机制可能为同步自康普顿散射模型(SSC);FR与中红外四个波段(W1-W4)的流量密度性强的相关性;logLR与中红外的四个波段(W1-W4)都有显著的相关性,表明中红外辐射是非热辐射主导的.Multiband data which have been obtained contemporaneously by Fermi Gamma-ray Space Telescope of 51 BL Lac objects were collected from literatures.Correlation analysis method is applied to study the correlation between the radio 5 GHz,the four mid-infrared bands which were includes 3.4 microns,4.6 microns,12 microns,22 microns （respectively called W1-W4 band） and the flux density of gamma rays.It is found that there is a significant correlation between Fγ and FR,as well as Fγ and FIR which indicates the synchro Compton radiation（SSC）may be the main mechanism of radiation of high-energy gamma-ray.There is a strong correlation between the flux density of radio and the four infrared wave bands（W1-W4）,as well as the significant correlation of luminosity between the radio and the four infrared wave bands（W1-W4） which indicates that the infrared radiation is not the thermal radiation.

关 键 词：BL Lac天体 相关性分析 辐射机制 非热辐射 

分 类 号：P158[天文地球—天文学]