Swift GRB191227A: Global MASTER-Net OT detection
Abstract
MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) was pointed to the GRB191227.07 31 sec after notice time and 51 sec after trigger time at 2019-12-27 01:40:28 UT. On our first (10s exposure) set we found 1 optical transient within Swift error-box (ra=319.167 dec=-16.7033 r=0.05) brighter than 15.3. T-Tmid Date Time Expt. Ra Dec Mag ---------|---------------------|-------|-----------------|-----------------|------- 56 2019-12-27 01:40:28 10 (21h 16m 37.28s , -16d 43m 33.5s) 14.4 The 5-sigma upper limit has been about 15.3mag The message may be cited. The OT has irregular early time behaviour since 51.1 till 501.5 seconds after the trigger. The galactic latitude b = -40 deg., longitude l = 34 deg. The observations made on zenith distance = 83 deg.The moon ( 1 % bright part) below the horizon (The altitude of the Moon is -14 deg. ). The sun altitude is -20.6 deg.
- Publication:
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GRB Coordinates Network
- Pub Date:
- December 2019
- Bibcode:
- 2019GCN.26596....1L