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MASTER follow up observations of optical flare from blazar S5 1217+71

ATel #4889; D. Denisenko, V. Lipunov, E. Gorbovskoy, N. Tiurina, P. Balanutsa, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, V. Yecheistov, D. Zimnukhov (Moscow State University, SAI), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov, A. Punanova (Ural Federal 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 the Pulkovo observatory RAS), V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov (Blagoveshchensk Educational University), P. Podvorotny, V. Shumkov, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez and F. Podest (OAFA)
on 14 Mar 2013; 15:28 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, AGN, Blazar, Quasar

Referred to by ATel #: 4898, 6023

Following the report on gamma-ray flaring activity from S5 1217+71 = 2FGL J1219.2+7107 detected by Fermi LAT (Ciprini et al., ATel #4885) MASTER-Amur auto-detection system has discovered OT source at (RA, Dec) = 12h 20m 03.60s +71d 05m 31.3s on 2013-03-14.62424 UT. The OT unfiltered magnitude is 15.8m (limit 18.6m). We have reference image without OT on 2012-11-20.63846 UT with unfiltered magnitude limit 18.6m.

The object was also observed by the same MASTER-Amur telescope in survey mode on 2013 Mar. 02.566 UT with unfiltered magnitude 16.8+/-0.2.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/122003.60710531.3.png

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