Swift Observations of GRB 190804B

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

1. Introduction

Sato et al. (GCN Circ. 25262) reported the GRB detection. The MAXI/GSC nova alert system triggered on an uncatalogued X-ray transient source at 07:58:15 UT on 2019 August 04. 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. 25286).

4. UVOT Observations and Analysis

UVOT results are not available.

Figure 1. The BAT light curve is not available.

Figure 2. The XRT light curve. Any data from a crosshatched region are not included in the fit.

RA (J2000)	Dec (J2000)	Error	Note	Reference
16h00m06.02s	-44°46'53.9"	3.8"	XRT	Osborne et al. GCN Circ. 25286

Table 1. Positions from the Swift instruments.

Band	Authors	GCN Circ.	Subject	Observatory	Notes
X-ray	Sato et al.	25262	MAXI/GSC detection	MAXI	detection

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

August 9, 2019