Swift Observations of GRB 220617A

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

1. Introduction

Lalla et al. (GCN Circ. 32212) 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.

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 Page et al. (GCN Circ. 32215). Five 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

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Optical	Lipunov et al.	32210	Fermi GRB 220617A: Global MASTER-Net observations report	MASTER
Optical	D'Avanzo et al.	32227	TNG optical observations	TNG
Gamma-ray	Fermi	32209	Fermi GBM Final Real-time Localization	Fermi GBM
Gamma-ray	Lalla et al.	32212	Fermi-LAT detection	Fermi LAT	Emax=8.2 GeV
Gamma-ray	Kozyrev et al.	32220	IPN triangulation of GRB 220617A (short)	IPN
Gamma-ray	Wood	32224	Fermi GBM observation	Fermi GBM	Epeak=2.3±0.3 MeV T90=0.7 seconds Fluence=2.3±0.1x10-6erg cm-2 (brighter than 93% of short GRBs)
Gamma-ray	Ridnaia et al.	32237	Konus-Wind detection	Konus-Wind	Epeak=1384 (-341,+504) keV Duration=~0.5 seconds Fluence=6.53(-1.15,+1.34)x10-6erg cm-2

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

June 21, 2022