Swift Observations of GRB 140901B

J.R. Cummings (NASA/UMBC) and V. D'Elia (ASDC) for the Swift team

1. Introduction

At 06:17:24 Swift-BAT rate-triggered on GRB 140901B (trigger # 611389) (Cummings GCN Circ. 16773). 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.

Standard analysis products for this burst are available at http://gcn.gsfc.nasa.gov/swift_gnd_ana.html.

2. BAT Observations and Analysis

The background in BAT was high, since Swift was near the SAA. The BAT lightcurve (Figure 1) shows a single FRED peak, with T₉₀ about 10 ± 1 s.

3. XRT Observations and Analysis

XRT 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

07^h28^m44.2^s -29°12'31" 2.0' BAT-initial Cummings GCN Circ. 16773

Table 1. Positions from the Swift instruments.

Band Authors GCN Circ. Subject Observatory Notes

Gamma-ray Zhang 16775 Fermi GBM detection Fermi GBM E_peak=219±82 keV
T₉₀=65 seconds
Fluence=3.8±0.6x10^-6erg cm^-2
(50^th percentile for long GRBs)

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

RA (J2000)	Dec (J2000)	Error	Note	Reference
07^h28^m44.2^s	-29°12'31"	2.0'	BAT-initial	Cummings GCN Circ. 16773

Band	Authors	GCN Circ.	Subject	Observatory	Notes
Gamma-ray	Zhang	16775	Fermi GBM detection	Fermi GBM	E_peak=219±82 keV T₉₀=65 seconds Fluence=3.8±0.6x10^-6erg cm^-2 (50^th percentile for long GRBs)

September 6, 2014