Swift Observations of GRB 221022A

J.P. Osborne (U. Leicester) for the Swift team

1. Introduction

Tohuvavohu et al. (GCN Circ. 32824) reported the GRB detection. Swift/BAT did not localize GRB 221022A onboard (T0: 2022-10-22T19:33:33 UTC, Fermi/GBM GCN Circ. 32816). 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 Osborne et al. (GCN Circ. 32847). Six uncatalogued X-ray sources have been detected, however none of them is above the RASS limit or shows definitive signs of fading.

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
07h53m22.03s	-05°07'00.9"	5'	BAT-GUANO	Tohuvavohu et al. GCN Circ. 32824

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Gamma-ray	Fermi	32816	Fermi GBM Final Real-time Localization	Fermi GBM
Gamma-ray	Poolakkil and Meegan	32834	Fermi GBM detection	Fermi GBM	T90=7 seconds Fluence=3.64±0.98x10-7erg cm-2 (brighter than 2.8% of long GRBs)

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

October 26, 2022