Swift Observations of GRB 210622A

A.P. Beardmore (U. Leicester) for the Swift team

1. Introduction

DeLaunay et al. (GCN Circ. 30302) reported the GRB detection. Swift/BAT did not trigger on GRB 210622A (T0: 2021-06-22 01:32:35.9 UTC, Fermi/GBM GCN Circ. 30297). 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 Beardmore et al. (GCN Circ. 30317).

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
15h32m28.10s	-26°12'47.5"	2.5'	BAT-GUANO	DeLaunay et al. GCN Circ. 30302

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Gamma-ray	Fermi	30297	Fermi GBM Final Real-time Localization	Fermi GBM
Gamma-ray	Lesage and Hamburg	30306	Fermi GBM detection	Fermi GBM	Epeak=376±98 keV T90=40 seconds Fluence=1.01±0.12x10-5erg cm-2 (75th percentile for long GRBs)

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

July 13, 2021