Polarization and beaming effect for BL Lacertae objects

Abstract

In this paper, based on the polarization-Doppler factor result (Fan et al. 1997, paper I), relations between the polarization and the variation ($\\Delta m $), as well as the core-dominance (log R) are derived and used to analyse the observation data of a 37-BL Lacertae-object sample. These correlations are consistent with the statistical results, which suggest that the polarization, the variation, and the core-dominance parameter are the indications of the beaming effect.