GRB 230427A: OSIRIS+/GTC observations
Abstract
We observed the afterglow of GRB 230427A at ~ 11.3 hours after burst (Page et al. GCN 33687; Takahashi et al. GCN 33690; Hu et al. GCN 33695; Tohuvavohu et al. 33703) with OSIRIS+ at the 10.4m GTC telescope, at the Roque de los Muchachos Observatory (La Palma, Spain). Observations consisted of 3x1200 s spectroscopy with grism R1000B, covering the spectral range between 3700 and 7800 AA under good observing conditions. From the acquisition image we detect a source at the GRB location and we measure a magnitude of r ~ 24.2 compared to PanSTARRS field stars. We detect a faint trace at GRB location above ~3950A which set a limit for the redshift of z < 3.3.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 2023
- Bibcode:
- 2023GCN.33704....1A