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

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.