GCN Circular 26660
Subject
Swift GRB200107.81: Global MASTER-Net OT detection
Date
2020-01-07T20:12:57Z (4 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
MASTER-SAAO robotic telescope (Global MASTER-Net:
http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy,
vol. 2010, 30L) located in South Africa (South African Astronomical
Observatory) was pointed to the Swift GRB200107.81 (trigger No 948219,07h
08m 15.74s , -83d 42m 56.5s, R=0.05) errorbox 18 sec after notice time
and 69 sec after trigger time at 2020-01-07 19:27:38 UT, with upper limit
up to 17.7 mag. The observations began at zenith distance = 54 deg. The
sun altitude is -18.0 deg.
We detect a new optical transient at a position
Ra=07h 07m 37.58s
Dec= -83� 43' 07.0"
Mag=17.2