Swift Observations of GRB 221215A

K.L. Page (U. Leicester) for the Swift team

1. Introduction

DeLaunay et al. (GCN Circ. 33062) reported the GRB detection. Swift/BAT did not localize GRB 221215A onboard (T0: 2022-12-15T04:14:27 UTC, Fermi/GBM GCN Circ. 33054). 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.

2. BAT Observations and Analysis

BAT refined results are not available.

3. XRT Observations and Analysis

Analysis of the initial XRT data was reported by Page et al. (GCN Circ. 33072).

4. UVOT Observations and Analysis

UVOT results are not available.

Figure 1. The BAT light curve is not available.

RA (J2000)	Dec (J2000)	Error	Note	Reference
10h20m13.34s	+46°52'21.7"	3'	BAT-GUANO	DeLaunay et al. GCN Circ. 33062

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Optical	Lipunov et al.	33056	Swift GRB221215.15: Global MASTER-Net observations report	MASTER
Gamma-ray	Fermi	33054	Fermi GBM Final Real-time Localization	Fermi GBM
Gamma-ray	Roberts et al.	33083	Fermi GBM Detection	Fermi GBM	Epeak=165±26 keV T90=14 seconds Fluence=6.8±1.2x10-7erg cm-2 (brighter than 8% of long GRBs)

Table 2. Summary of GCN Circulars from other observatories sorted by band and then circular number.

December 20, 2022