J/AZh/71/717 J/AZh/71/717 Polarimetric Observations of BL Lac V A Gagen-Torn S G Marchenko A V Yurchenko V A Yakovleva Astron. Zh. 71 717 1994 1994AZh....71..717G BL Lac objects Polarization This paper continues publications that report the results of photoelectric polarization measurements of the blazar BL Lac. Earlier, we published observational data obtained over the period 1969-1982 (Gagen-Torn et al., 1984AZh....61..925G). Here, we discuss the observations over the period 1983-1991.

BL Lac22 02 43.3+42 16 40

Date Date of observation (month, day) --- Year Year of the observation. yr JD Julian Day d P Polarization parameters P % u_P Uncertainty flag on P --- e_P Error on P % Q Polarization parameters Q deg u_Q Uncertainty flag on Q --- e_Q Error on Q deg d Flag for aperture used in the observation: 1 - 18.8" ; 3 - 26.7" --- Fo/Fb Ratio of the object flux to the background flux --- N Number of observations --- Veta Avedisova INASAN 1997Jan29 J_AZh_71_717.xml