GRB 200412B: continued Tautenburg observations
Abstract
We continued observing the field of GRB 200412B (Fermi GBM team, GCN 27547) with the Tautenburg 1.34m Schmidt telescope equipped with the TAUKAM 6k x 6k CCD camera and the wide V-band filter (VB; Stecklum et al., GCN 27567, 27582; Klose et al., GCN 27575). For the optical transient (Lipunov et al., GCN 27555, 27556) at a mean time of 3.53 days post burst we measure VB = 22.29 +/- 0.11. This confirms the suspected steepening of the light curve decay (Stecklum et al., GCN 27582). Our present VB-band data imply alpha2 = 2.52 +/- 0.02 and a break time of 2.04 +/- 0.02 days.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 2020
- Bibcode:
- 2020GCN.27593....1K