Study On Radio Polarization Of Active Galactic Nuclei

Active galactic nuclei have become the most active objects in modern astrophysics research because of their extreme features,such as high luminosity,high polarization,and high redshift.The parameters such as coordinates,redshift,peak frequency,and flow rate of 1744 radio sources were selected,and data analysis was performed by using matlab software.The results were as follows:(1)The mean value and median of the polarization distribution span and degree of polarization of BL Lac objects.Both are larger than FSRQ and BCU.Among them,BL Lac objects have the largest mean and median of polarization degrees,smaller for FSRQ,and minimum for BCU and other types;(2)There is no correlation between Fermi Blazar objects' polarization angles of radio polarization in different scale survey.(3)Radio polarizationof BL Lac objects has certain correlation with radio polarization of FSRQ,and BCU has no correlation with radio polarization of other types of Fermi Blazarobjects;(4)Fermi Blazarobjects have low synchrotron radiation peak frequency in different scales,and the radio polarization is high;but the objects with high synchrotron peak frequency has low radio polarization.