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Polarization Position Angle Swings caused by Relativistic Effects
Qian Shanjie; Zhang Xizhen
2003
Source PublicationChinese Journal of Astronomy and Astrophysics
ISSN1009-9271
Volume3Issue:1Pages:75
AbstractPolarization position angle swings of similar to 180degrees observed in extragalactic radio sources are a regular behavior of variability in polarization. They should be due to some kind of physically regular process. We consider relativistic shocks which propagate through and 'illuminate' regular configurations of magnetic field, producing polarization angle swing events. Two magnetic field configurations (force-free field and homogeneous helical field) are considered to demonstrate the results. It is shown that the properties of polarization angle swings and the relationship between the swings and variations in total and polarized flux density are critically dependent on the configuration of magnetic field and the dynamical behavior of the shock. In particular, we find that in some cases polarization angle swings can occur when the total and polarized flux densities only vary by a very small amount. These results may be useful for understanding the polarization variability with both long and short timescales observed in extragalactic radio sources.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/39401
Collection中国科学院国家天文台
Affiliation中国科学院国家天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian Shanjie,Zhang Xizhen. Polarization Position Angle Swings caused by Relativistic Effects[J]. Chinese Journal of Astronomy and Astrophysics,2003,3(1):75.
APA Qian Shanjie,&Zhang Xizhen.(2003).Polarization Position Angle Swings caused by Relativistic Effects.Chinese Journal of Astronomy and Astrophysics,3(1),75.
MLA Qian Shanjie,et al."Polarization Position Angle Swings caused by Relativistic Effects".Chinese Journal of Astronomy and Astrophysics 3.1(2003):75.
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