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GRB 110731A

Time: 11:09:30
Trigger Number: 458448
Burst Advocate: Sam Oates

BAT Data:

RA: a 280.513
18:42:03.1
Dec: a -28.536
-28:32:09.6
90% Error Radius: b 1.0
T90: c 38.8
Fluence: d 60 (1)
1s Peak Photon Flux: e 11.0 (0.3)
Photon Index: f 1.15, PL (0.05)

90% error in parentheses,
a J2000; b arcmin; c seconds; d 10-7 erg/cm2 (15-150 keV); e ph/cm2/sec (15-150 keV); f PL = simple power-law, CPL = cutoff power-law (15-150 keV)

BAT Light Curve:

BAT Light Curve for GRB 110731A

XRT Data:

RA: a 18:42:01.04
Dec: a -28:32:13.7
90% Error Radius: b 1.4
Time to First Observation: c n/a
Early Flux: d 584
11 Hour Flux: d 0.1608164
24 Hour Flux: d 0.0573116
Initial Temporal Index: 1.287
Spectral Index (Gamma): 1.85145
Column Density (NH): e 9.11048

Note: Please be aware that only the very basic temporal and spectral quantities are reported here. You are strongly encouraged to see the referenced GCN circulars for full details.
a J2000; b arcsec; c seconds; d 10-11 erg/cm2/s (0.3-10 keV); e 1021 cm-2

» XRT GRB Live Catalogue
» XRT Light Curves
» XRT Spectra

UVOT Data:

RA: a 18:42:00.99
Dec: a -28:32:13.8
90% Error Radius: b 0.2
Time to First Observation: c 75
V Magnitude: V=16.90
Other Filter Magnitudes: B=17.87
U_fc=17.71
U=18.37
UVW1>18.88
UVM2>18.77
UVW2>19.24
White_fc=15.85
White=17.64

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
2.83 (Gemini-North: absorption)
Host Galaxy:
Other Observatory Detections:
Faulkes (North & South), Fermi (LAT & GBM), NOT, Konus-Wind, Gemini-North, Mt John University Observatory (61cm), Suzaku

Comments:

References:

BAT: GCN 12215; GCN 12217
XRT: GCN 12215; GCN 12219; GCN 12224; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 12215; GCN 12222
Radio:
Redshift: GCN 12225 (Gemini-North)
Host:
Other: GCN Report 343.1