M. Perri (SSDC and INAF-OAR) for the Swift team
A. Tohuvavohu (GCN Circ. 33132) reported the GRB detection. Table 1 contains the best reported positions from Swift.
Table 2 is a summary of GCN Circulars about this GRB from observatories other than Swift.
BAT refined results are not available.
Analysis of the initial XRT data was reported by Perri et al. (GCN Circ. 33139). Of the sources reported by Perri et al. (GCN Circ. 33135), "Source 2" is fading with >3-sigma significance, and is therefore likely the GRB afterglow.
The light curve (Figure 2) can be modelled with a power-law decay with a decay index of α=1.1 (+0.6, -0.5).
UVOT results are not available.
Figure 1. The BAT light curve is not available.
Figure 2. The XRT light curve.
Any data from a crosshatched region are not included in the fit.
RA (J2000) | Dec (J2000) | Error | Note | Reference |
---|---|---|---|---|
2 |
+25°07'47.2" | 3.1" | XRT-final | UKSSDC |
2 |
+25°07'47.2" | 3.0" | XRT | Perri et al. GCN Circ. 33139 |
2 |
+25°08'18.6" | 5' | BAT-GUANO | A. Tohuvavohu GCN Circ. 33132 |
Band | Authors | GCN Circ. | Subject | Observatory | Notes |
---|---|---|---|---|---|
Optical | M. Odeh | 33136 | AKO Upper Limit | Al-Khatim Obs. | upper limits |
Optical | Ror et al. | 33149 | 3.6m DOT optical upper limit | DOT | upper limits |
Gamma-ray | Fermi | 33129 | Fermi GBM Final Real-time Localization | Fermi GBM | |
Gamma-ray | Lesage and Meegan | 33146 | Fermi GBM Observation | Fermi GBM | Fluence=4.4±0.4x1 (brighter than 4.2% of long GRBs) |
January 5, 2023