Swift Observations of GRB 170222A

A. D'Ai (IASF-PA) for the Swift team

1. Introduction

Hurley et al. (GCN Circ. 20722) 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

XRT refined results are not available.

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
Gamma-ray	Hurley et al.	20722	IPN Triangulation of GRB 170222A (short/hard)	IPN
Gamma-ray	Hamburg et al.	20728	Fermi GBM observation	Fermi GBM	Epeak=862±118 keV T90=1.7 seconds Fluence=5.31±0.19x10-6erg cm-2 (99 percentile for short GRBs)
Gamma-ray	Kozlova et al.	20731	Konus-Wind observation	Konus-Wind	Epeak=1210 (-418,+830) keV Duration=~1.9 seconds Fluence=9.10(-2.43,+3.61)x10-6erg cm-2
Gamma-ray	Ricciarini et al.	20749	CALET Gamma-Ray Burst Monitor detection	CALET	T90=1.2±0.1 seconds

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

February 27, 2017