Chin. Phys. Lett.  2001, Vol. 18 Issue (5): 708-710    DOI:
Original Articles |
Infrared Polarization and Beaming Effect for BL Lac Objects
MEI Dong-Cheng1,2,3;XIE Guang-Zhong1,2,3
1Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011 2The National Astronomical Observatories, Chinese Academy of Sciences 3Yunnan Astrophysics Center, Yunnan University, Kunming 650091
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MEI Dong-Cheng, XIE Guang-Zhong 2001 Chin. Phys. Lett. 18 708-710
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Abstract With the idea of the beaming models, we derive a relation between the observed polarization and Doppler-corrected magnitude, that is, the observed polarization is in anti-correlation with the Doppler-corrected magnitude. Making use of the infrared data observed simultaneously by Impey et al. [Mon. Not. R. Astron. Soc. 200 (1982) 19; 209 (1984) 245] and Holmes et al. [ibid. 210 (1984) 961] we found that (1) there is a significant correlation between the observed maximum polarization and Doppler-corrected magnitude but the polarization is not in anti-correlation with the Doppler corrected magnitude; (2) the maximum infrared polarization is strongly correlated with the maximum optical polarization. Our conclusion is that the infrared polarization depends only on the degree of ordering of the magnetic field in the synchotron
emission regions and not on the beaming effect. Both infrared and optical emissions originate from the synchrotron radiation.

Keywords: 98.54.Cm      98.58.Jg      98.58.Fd     
Published: 01 May 2001
PACS:  98.54.Cm (Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei))  
  98.58.Jg (Infrared emission)  
  98.58.Fd (Jets, outflows and bipolar flows)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I5/0708
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