MASTER OT J211711.2-123751.4 - GRB181201A optical counterpart discovery

ATel #12255; E. Gorbovskoy, V. Lipunov (Lomonosov MSU), R. Podesta, F. Podesta, C. Francile, C. Lopez (Observatorio Astronomico Felix Aguilar, SJNU), H. Levato (San Juan National University), V. Kornilov, N. Tiurina, V. Vladimirov, A. Kuznetsov, P. Balanutsa (Lomonosov MSU), R. Rebolo Lopez, M. Serra-Ricart (IAC), D. Buckley (SAAO), O. Gress, N. Budnev (API, ISU), A. Gabovich, V. Yurkov, Yu. Sergienko (BSPU), V. Senik, A. Tlatov (KSS, Pulkovo observatory)
on 1 Dec 2018; 16:06 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Tweet

MASTER OT J211711.2-123751.4 - GRB181201A optical counterpart discovery by MASTER

MASTER-OAFA robotic telescope ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
was pointed to the GRB181201A and started observations 10 sec after notice time and 18 sec after trigger time at 2018-12-01 02:40:30 UT.

MASTER auto-detection system (Lipunov et al. 2010) detected 1 optical transient on MASTER first (10s) exposure ( Podesta et al. GCN 23470 )
within INTEGRAL error-box (ra=319.317 dec=-12.6325 r=0.05; see Mereghetti et al. GCN #23469)

      Date,Time_UT           Exp,s       RA,Dec2000                                  Mag
------------------------------|-------|------------------------------------------|---
2018-12-01 02:40:30UT   10    ( 21h 17m 11.2s , -12d 37m 51.4s)   13.17

We started 18s after trigger and OT became brighter on our following images.

The deep photometry and spectroscopy is required

The discovery and reference MASTER images are available at
http://master.sai.msu.ru/static/OT/MASTEROTGRB181201A.png

MASTER Global Robotic Net