MASTER OT J073807.40+174219.2 brightening during IceCube-211208A observations
ATel #15098; K. Zhirkov, V. Lipunov, E. Gorbovskoy, P. Balanutsa, A. Kuznetsov, O. Gress, G. Antipov, D. Vlasenko, N. Tiurina, D. Zimnukhov, V. Senik, V. Topolev, A. Chasovnikov, E. Minkina, V. Grinshpun, D. Cheryasov, Ya. Kechin, Ya. Kechin, T. Pogrosheva, V. Shumkov (Lomonosov MSU), R. Rebolo, M. Serra(IAC), D. A. H. Buckley (SAAO), N. M. Budnev (ISU, API), R. Podesta, C. Lopez, F. Podesta, C. Francile (OAFA), A. Tlatov, D. Dormidontov (KSS, Pulkovo observatory), A. Gabovich(BSPU)
on 9 Dec 2021; 16:16 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Neutrinos, Request for Observations, AGN, Blazar, Transient, Variables
MASTER Global Robotic Net ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
started IceCube-211208A (IceCube GCN #31191, S.Barthelmy NASA GCN page,
Ttrigger=2021-12-08 20:02:51.1UT, RA,Dec(2000): 114.52 (+2.82d -2.50d); +15.56(+1.81 -1.39)
error-box observations
640 sec after notice time and 682 sec after trigger time at 2021-12-08 20:14:13 UT (Lipunov et al. GCN #31190),
see cover map
https://master.sai.msu.ru/site/master2/event.php?id=1808302
We observed it at MASTER-Amur, MASTER-Kislovodsk, MASTER-IAC, MASTER-SAAO, MASTER-OAFA and analyzed MASTER archive images since 2004 of the sources, that can be related with this event.
We detected MASTER OT J073807.40+174219.2 ( PKS 0735+17 Blazar, Savchenko et al. Atel #15021) brightening up to 14.1m (0.2m/12h) during last nights observations
Observation and reduction will be continued.
Spectral observations are required.
MASTER Global Robotic Net
