GRB 131231A

Time: 04:45:16.08
Trigger Number: Fermi
Burst Advocate:

BAT Data:

RA: a 10.585
Dec: a -1.845
90% Error Radius: b n/a
T90: c n/a
Fluence: d n/a (n/a)
1s Peak Photon Flux: e n/a (n/a)
Photon Index: f n/a (n/a)

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)

XRT Data:

RA: a 00:42:21.70
Dec: a -01:39:06.7
90% Error Radius: b 3.5
Time to First Observation: c 52100
Early Flux: d n/a
11 Hour Flux: d 2.2457888
24 Hour Flux: d 7.153281
Initial Temporal Index: -1.466
Spectral Index (Gamma): 1.86263
Column Density (NH): e 1.43984

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

UVOT Data:

RA: a 00:42:21.66
Dec: a -01:39:10.6
90% Error Radius: b 0.43
Time to First Observation: c 136500
V Magnitude: n/a
Other Filter Magnitudes: U=19.57

a J2000; b arcsec; c seconds

Other Burst Info:

Host Galaxy:
Other Observatory Detections:


Fermi: GCN 15640


XRT: GCN 15648; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 15673
Other: GCN Report 458.1