Journal of Jishou University(Natural Sciences Edition)

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Polarization and Core-Dominance Parameter for Blazars

OUYANG Zhihao, FENG Huanjian, ZHENG Yini, ZHOU Zeping, XU Peishan,  HE Sile,LI Yuntian, LUO Gaoyong, TUO Manxian, YANG Jianghe, FAN Junhui   

  1. (1. Schoolof Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China; 2. Center for Astrophysics, Guangzhou University, Guangzhou 510006, China; 3. Astronomy Science and Technology Research Laboratory, Department of Education of Guangdong Province, Guangzhou 510006, China; 4. College of Mathematics and Physics Science, Hunan University of Arts and Science, Changde 415000, Hunan China)
  • Online:2020-07-25 Published:2020-10-27
  • About author:OUYANG Zhihao (1998—),male, was born in Foshan city, Guangdong Province; Master's degree of department of physics, School of physics and materials science, Guangzhou University; research area is AGN physics
  • Supported by:

    National Science Foundation of China (11733001, U1531245, 11873073, U1431122, U2031112); Natural Science Foundation of Guangdong Province (2017A0303313011, 2019B030302001); Astrophysics Key Subjects of Guangdong Province and Guangzhou City; Research Project of Education and Teaching Reform of Hunan Province in 2018 (2018-436); Research Fund of Hunan Provincial Department of Education (19C1263)


Radio and optical polarizations are collected for a blazar sample. The relationships between polarization and jet parameters are investigated. The analysis results indicate that (1) polarization in BL Lac is higher than in FSRQs, and the core dominance parameter R and the ratio f are both positively correlated with intrinsic radio and optical polarizations; (2) the jet type is spherical; (3) BL Lacs and FSRQs have a similar correlation between the intrinsic polarization and jet parameters (log R and f).

Key words: active galactic nuclei, jets, BL Lacertae objects, flat-spectrum radio quasar

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