Swift Observations of GRB 200405B

B. Sbarufatti (PSU) for the Swift team

1. Introduction

Svinkin et al. (GCN Circ. 27505) 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 (GCN Circ. 27568). Of the four uncatalogued X-ray sources reported in GCN Circ. 27500 (Sbarufatti et al.), none shows any evidence 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
04h11m17.95s	-51°34'07.3"	6.5"	XRT	GCN Circ. 27500

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Optical	Strausbaugh and Cucchiara	27501	LCO Optical Upper Limits	LCO	upper limits
Radio	Dobie et al.	27516	ATCA follow-up and ASKAP limits on pre-burst radio emission	ATCA	upper limits
Gamma-ray	Svinkin et al.	27505	IPN triangulation of GRB 200405B (short)	IPN

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

April 14, 2020