GRB 120403B

Time: 20:33:56
Trigger Number: 519256
Burst Advocate: Valerio D'Elia

BAT Data:

RA: a 54.302
Dec: a -89.029
90% Error Radius: b 2.4
T90: c 7.3
Fluence: d 2.1 (0.4)
1s Peak Photon Flux: e 0.9 (0.2)
Photon Index: f 1.79, PL (0.31)

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 120403B

XRT Data:

RA: a 03:41:06.77
Dec: a -89:00:31.0
90% Error Radius: b 2.2
Time to First Observation: c 907.51
Early Flux: d n/a
11 Hour Flux: d 0.028047355
24 Hour Flux: d 0.014885045
Initial Temporal Index: -0.8121
Spectral Index (Gamma): 2.21248
Column Density (NH): e 2.30413

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 n/a
Dec: a n/a
90% Error Radius: b n/a
Time to First Observation: c 910
V Magnitude: V>20.7
Other Filter Magnitudes: B>21.3

a J2000; b arcsec; c seconds

Other Burst Info:

Host Galaxy:
Other Observatory Detections:
Fermi (GBM)


Because of an observing constraint, the slew to the burst was delayed by 12.9 minutes.
UVOT: no detection


BAT: GCN 13203; GCN 13207
XRT: GCN 13203; GCN 13205; GCN 13223; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 13203; GCN 13206
Other: GCN Report 388.1