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MASTER Detection of Bright Optical Activity from Blazar PKS 0507+179

ATel #4424; D. Denisenko, P. Balanutsa, P. Podvorotny, S. Shurpakov, N. Tiurina, E. Gorbovskoy, V. Lipunov, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, 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 (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), V. Shumkov, (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez and F. Podest (Observatorio Astronomico Felix Aguilar; OAFA)
on 26 Sep 2012; 10:20 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Radio, Optical, X-ray, TeV, VHE, Blazar, Quasar

Referred to by ATel #: 4531, 4546, 4724, 4998, 6935, 7117, 9672

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 05h 10m 02.32s +18d 00m 41.5s on 2012-09-25.07681 UT. The OT unfiltered magnitude is 16.2m (limit 19.0m).

The OT is identical to QSO B0507+179 = PKS 0507+179 = NVSS J051002+180041 = USNO-B1.0 1080-0080773 (catalog magnitude R=19.09). We have 14 past positive observations of this object in MASTER-Kislovodsk database, 9 in MASTER-Tunka and 3 in MASTER-Amur with the range of variability from 18.7 to 16.6 mag (unfiltered with the Red zero point). The current magnitude is the brightest ever observed by all MASTER telescopes for this object since 2009-01-22.

Follow up multi-wavelength observations of this source are encouraged.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/PKS0507+179-MASTER-20120925.jpg

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