MASTER polarization measurements of of the quasar CGRaBSJ0211+1051

ATel #5588; E. Grigoreva, V. Krushinsky, M. Pruzhinskaya, D. Denisenko, E. Gorbovskoy, V. Lipunov, N. Tiurina, V. Yecheistov, P. Balanutsa, V. Kornilov, V. Chazov, A. Kuznetsov, V. Vladimirov, D. Cheryasov, M. Kornilov, B. Safonov, V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov, A. Gabovich (Blagoveshchensk Educational University), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress, A. Frolova (Irkutsk State University), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk Solar Station of Pulkovo Observatory), I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), P. Podvorotny, V. Shumkov, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez, F. Podest (OAFA)
on 18 Nov 2013; 16:39 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

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Following the announcements of NIR brightening of the quasar CGRaBSJ0211+1051, we performed optical polarization measurements of CGRaBSJ0211+1051 with MASTER-Tunka and MASTER-Blagoveshchensk in four polarizers (Atel #5570). Averaged magnitude during observational period was 14.5 (Position Angle=0), 14.9 (P.A.=90), 14.6 (P.A.=135) and 14.9 (P.A.=45) in four polarizers with Red zero point. The magnitude has not significantly change since our recent observations in the white light with MASTER-Blagoveshchensk on Oct. 25 and 28 and MASTER-Tunka on Nov. 02 and 05.
On 2013 Nov. 12.7 (JD 2456609.2), polarization degree was (22+-4)% and p.a. = 157+-5 degrees.

The MASTER polarizers are broadband polarizers manufactured using linear conducting nanostructure technology (Kornilov et al., Experimental Astr. vol.33, p.173, 2012; Ahn et al., Nanotechnology, vol. 16, p.1874, 2005). Magnitudes obtained from broadband photometry correspond to 0.2B + 0.8R where B, R are the standard Johnson filters (Gorbovskoy et al., Astronomy Rep., vol.57, p. 233, 2012). Each tube is equipped with one polarizer, the polarization directions of two tubes in a single assembly being perpendicular to one another. Polarizers' axes are set in two ways with respect to celestial sphere: in MASTER Kislovodsk and MASTER Tunka sites, the axes are directed at positional angle 0 and 90 to the celestial equator (polarizers oriented at 45 and 135 were added in Kislovodsk in April 2012), in MASTER Blagoveshchensk and MASTER Ural, at angles 45 and 135 . Thereby, using several MASTER telescopes one can realize observations with different orientation of polarizers. Such construction is very effective for fast events with signicant intrinsic polarization.

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