MASTER optical observation of the blazar GB6 J1058+2817
ATel #14511; K. Zhirkov, V. Lipunov, V. Kornilov (Lomonosov MSU), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), R. Podesta, F. Podesta, C. Francile (OAFA), D. Buckley (SAAO), , E. Gorbovskoy, O. Gress, N. Tiurina, P. Balanutsa, F. Balakin, V. Vladimirov, A. Kuznetsov, D. Vlasenko, I. Gorbunov, D. Zimnukhov, V. Senik, A. Chasovnikov, A. Pozdnyakov, V. Topolev, D. Cheryasov, V. Shumkov, T. Pogrosheva (Lomonosov Moscow State University, SAI, Physics Department), N. M. Budnev (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V. Yurkov (Blagoveshchensk State Pedagogical University)
on 5 Apr 2021; 16:57 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Gamma Ray, Request for Observations, AGN, Blazar
MASTER-Net reports on an enhanced optical activity of a flaring blazar GB6 J1058+2817 (ATels #14491, ATel #14496, ATel #14506).
Following the announcement of the flaring state of the object, MASTER-SAAO and MASTER-IAC started observing the object at 2021-03-29 19:36 and 22:00 respectively, with no filter and with the exposure time of 180s. Resulting magnitude of the blazar was found to be at 17.05+/-0.03(1 standard deviation). Additional observations were made on the 2021-04-05, with the magnitude of 16.94+/-0.03.
Due to gaps in our observations the closest frame before the flare was at 2020-02-23 23:43 with the magnitude of 17.49+/-0.05. Considering this, we can safely assume that the blazar brightened since 2020-02-23.
We encourage further multiwavelength observations of the blazar.
MASTER-Net will keep observing it for following nights.
MASTER Global Robotic Net
