Infrared Properties For Broad-line Active Galactic Nuclei

Active Galatic Nuclei(AGNs) are among the most powerful objects in the universewith an extraordinary amount of energy released from their unresolved nuclei.HighLuminance,hign energy x-rays, γ-rays and infrared radiation emitted and jetphenomenon was observed from AGN.We introduce thedefinition,characteristics,classification of AGNs and the unified models for activegalactic nuclei in the first chapter.In the seconed chapter,three kinds of infraredastronomical satellitesmaking a contributionto our studyare described in detail.Wecombine data from two all-sky survey and wide field infrared survey explore to studythe infrared properties for broad-line active galactic nuclei(BLAGNs)in the threechapter,about725BLAGNs were choosed.We find the most of BLAGNs distributedaround the power lawlinein mid-infraredbland,shows the main mid-infrared radiation was non-thermal radiation that comingfrom the centre of BLAGN,a little of infrared radiation come from host galaxy.Inaddition,a strong correlation for most AGN between1.4GHz radio luminosity,0.1-2.4keV X-rayluminosity(Lx)and infrared(3.4,4.6,12,22μm).The correlation implyingmid-infrared radiation is influenced on radio radiation and x-ray radiation.