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Increased rate of brightening of PKS0507+17

ATel #4531; D. Denisenko, V. Lipunov, N. Tiurina, P. Balanutsa, E. Gorbovskoy, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, D. Zimnukhov, V. Echeistov (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), P. Podvorotny, V. Shumkov, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez and F. Podest (Observatorio Astronomico Felix Aguilar; OAFA)
on 30 Oct 2012; 21:37 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Blazar, Quasar

Referred to by ATel #: 4546, 4724, 4998, 6935, 7117, 9672, 10271

In response to the report by Carrasco et al. (ATel #4528) of the recent NIR brightening of the quasar PKS0507+17 we provide the following unfiltered magnitudes obtained by the identical MASTER robotic telescopes (0.40-m f/2.5 reflectors + 4kx4k CCD) in addition to the 2012 Aug. 20 value reported in ATel #4424 (Denisenko et al.):

PKS 0507+179

Date, UTUnf. mag.Observing siteExp., sec.
20120820.80516.61+/-0.19MASTER-Amur60
20120925.07716.16+/-0.06MASTER-Kislovodsk180
20121019.64816.08+/-0.07MASTER-Amur60
20121030.85115.55+/-0.09MASTER-Amur60

Our observations obtained in the same photometric system confirm that PKS 0507+179 has been brightening at the increasing rate in the optical band during the last 10 days.

Global MASTER Robotic Net