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MASTER: very bright blazar flare

ATel #7133; V. Lipunov, E. Gorbovskoy, V. Kornilov, N. Tiurina, P. Balanutsa, A. Kuznetsov, V. Vladimirov, V. Chazov, D. Denisenko (Lomonosov Moscow State University, SAI), O. Gress, K. Ivanov, N. Budnev, S. Yazev, V. Poleshchuk, E. Konstantinov, O. Chuvalaev (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko (Kislovodsk solar station of the Pulkovo observatory RAS), S. Potter, A. Kniazev, M. Kotze (South African Observatory),V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), V. Yurkov, Y. Sergienko, A. Gabovich (Blagoveshchensk Educational University), V. Shumkov, S. Shurpakov (MASTER-team)
on 24 Feb 2015; 10:49 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, AGN, Black Hole, Blazar, Quasar

Referred to by ATel #: 7167, 7168, 7184

MASTER OT J141922.56-083831.7 - bright blazar flare

MASTER-Kislovodsk auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered blazar flare - optical transient at (RA, Dec) = 14h 19m 22.56s -08d 38m 31.7s on 2015-02-21.98773 UT.

The OT unfiltered magnitude is 14.6m (limit 19.7m).

The OT is seen in 35 images.

We have reference images in quiet states:
on 2014-02-06.012 UT with 17.3 unfiltered magnitude(19m limit),
2013-12-25 03:23:33.231 with 17.5m,
on 2012-02-23.059UT with 18.9m.

This OT is identical to J141922.55-083832.0 blazar (Blazars with gamma-ray counterparts, D'Abrusco+, 2014)with flat spectrum radio quiet .

The discovery and reference images are available at http://master.sai.msu.ru/static/OT/MASTERJ141922.56-083831.7blazar.jpg .

Spectral observations are required.

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net