GRB 200216B: Nanshan/NEXT early optical upper limit and possible host galaxy
Abstract
We observed the field of GRB 200216B (D'Avanzo et al., GCN 27102) using the NEXT 0.6m optical telescope located at Nanshan, Xinjiang, China. Observations automatically started at 13:33:46 UT on 2002-02-16, i.e., 73 s after the BAT trigger. We obtained 3x40 s, 4x60 s, 3x90 s and onging 200 s frames in the Sloan r-filter. The altitude for the GRB and the weather has been improving. No optical afterglow is detected in our images at the XRT position (D'Avanzo et al., GCN 27102) down to a limiting magnitude of r~20.0. Meanwhile, we note that there exists a very marginally detected blob (thus noise fluctuation not ruled out yet), extended and being positionally consistent with the XRT position both in PanSTAR r-band field, centred at coordinates: R.A. (J2000) = 10:41:44.23, Dec. (J2000) = +19:28:33.18. The source would be of r~23 in depth, and might be the host galaxy of the GRB. Deep imaging would identify the nature of the blob.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- February 2020
- Bibcode:
- 2020GCN.27104....1X