Polarization and Beaming for Blazars

Details Polarization and Beaming for Blazars Polarization and Beaming for Blazars

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006chjas...6b.349f&link_type=abstract

Chinese Journal of Astronomy and Astrophysics, Supplement, Volume 6, Issue S2, Proceedings of the 2005 Lake Hanas International

Astronomy and Astrophysics

Astrophysics

Galaxies: Blazars, Galaxies: Jets, Polarization

Scientific paper

Based on the beaming model, a relation between the observed polarization and Doppler factor was obtained for BL Lacertae objects--BLs. If the flat spectral radio quasars---FSRQs fit a similar polarization-Doppler factor relation as BL Lacs, then we can find that the ratio, f, of the de-beamed jet luminosity to the unbeamed luminosity in the source frame in BLs is greater than that in FSRQs. In addition, in a revised polarization and core-dominance parameter plot, they obey to differently linear correlation suggesting that they have some differently intrinsic properties. The difference in f, found here, is consistent with the result by Fan (2003), which perhaps account for the emission line difference between BLs and FSRQs. We proposed that there is no evolution between BLs and FSRQs and their emission line difference is from the difference in their ratio f.

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