IceCube Alert 200421.02: Global MASTER-Net observations report
Abstract
MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the IceCube Alert 200421.02 (trigger No 60770138,05h 57m 01.20s , +07d 54m 25.2s, R=0.61) errorbox 45894 sec after notice time and 45943 sec after trigger time at 2020-04-21 13:21:07 UT, with upper limit up to 15.6 mag. Observations started at twilight. The observations began at zenith distance = 68 deg. The sun altitude is -10.4 deg. The galactic latitude b = -8 deg., longitude l = 200 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1341229 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 45973 | 2020-04-21 13:21:07 | MASTER-Tunka | (05h 51m 49.84s , +08d 17m 27.8s) | C | 60 | 15.3 | 46053 | 2020-04-21 13:22:27 | MASTER-Tunka | (05h 59m 58.32s , +08d 19m 28.6s) | C | 60 | 15.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 2020
- Bibcode:
- 2020GCN.27614....1L