Swift Observations of GRB 221017A

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

1. Introduction

Nawa et al. (GCN Circ. 32777) reported the GRB detection. The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 2022-10-17T05:39:31 UT. 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 did not observe this burst.

3. XRT Observations and Analysis

Analysis of the initial XRT data was reported by Osborne et al. (GCN Circ. 32807).

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

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Optical	Lipunov et al.	32779	MAXI GRB221017.24: Global MASTER-Net observations report	MASTER
X-ray	Nawa et al.	32777	MAXI/GSC detection	MAXI	detection
Gamma-ray	Kozyrev et al.	32787	IPN triangulation of GRB 221017A (long)	IPN
Gamma-ray	Cherry et al.	32813	CALET Gamma-Ray Burst Monitor detection	CALET
Gamma-ray	Ridnaia et al.	32872	Konus-Wind detection	Konus-Wind	Epeak=237 (-15,+16) keV Duration=~332 seconds Fluence=3.90(-0.32,+0.32)x10-4erg cm-2

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

October 29, 2022