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MASTER: bright optical blazar flare with historical gamma-ray counterpart

ATel #8481; V. Lipunov, N. Tiurina, E. Gorbovskoy (Lomonosov MSU), D. Buckley (SAAO), A. Kuznetsov, P. Balanutsa, V. Kornilov, V. Vladimirov, I. Gorbunov, D. Vlasenko (M. V.Lomonosov Moscow State University, Sternberg Astronomical Institute), S. Potter, M. Kotze (The South African Astronomical Observatory)
on 31 Dec 2015; 09:52 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, AGN, Blazar, Transient, Variables

MASTER OT J142741.38-330531.7 discovery - bright optical 2FGL J1427.4-3306 blazar flare

MASTER-SAAO auto-detection system( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 349171 ) discovered OT source at (RA, Dec) = 14h 27m 41.38s -33d 05m 31.7s on 2015-12-26.07199 UT.
The OT unfiltered magnitude is 14.9m (limit 17.7m).
This blazar is seen on 6 images in current bright state.
We have reference images on 2015-01-19.07569 UT with m_OT=17.6 and unfiltered magnitude limit 19.4m, and m_OT=18.1 on 2015-01-01 01:55:08.883UT, etc
This AGN has gamma-ray counterpart.
Spectral observations are required.
The discovery and reference images are available at http://master.sai.msu.ru/static/OT/142741.38-330531.7.png

MASTER Global Robotic Net