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GRB 090424

Time: 14:12:09
Trigger Number: 350311
Burst Advocate: John Cannizzo

BAT Data:

RA: a 189.531
12:38:07.4
Dec: a 16.829
16:49:44.4
90% Error Radius: b 1.0
T90: c 48
Fluence: d 210 (0.0)
1s Peak Photon Flux: e 71.0 (2.0)
Photon Index: f 1.19, CPL (0.15)

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 090424

XRT Data:

RA: a 12:38:05.12
Dec: a 16:50:15.6
90% Error Radius: b 1.4
Time to First Observation: c 84.46
Early Flux: d 654
11 Hour Flux: d 0.8685105
24 Hour Flux: d 0.36182094
Initial Temporal Index: -1.287
Spectral Index (Gamma): 1.96315
Column Density (NH): e 4.26707

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 12:38:05.11
Dec: a 16:50:15.1
90% Error Radius: b 0.74
Time to First Observation: c 91
V Magnitude: V=16.86
Other Filter Magnitudes: B=17.27
U=16.40
UVW1=16.81
UVM2=17.39
UVW2=17.51
White=15.27

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
0.544 (Gemini-South: absorption)
0.544 (WHT)
Host Galaxy:
Other Observatory Detections:
ROTSE-IIIa, TNT, Fermi (GBM), Calar Alto (1.23m), Liverpool (2m), AAVSO (0.4m), TAOS (50cm), Gemini-South, ESO/MPI (2.2m), Taurus Hill Observatory (0.35m), Lulin (1m), WHT, Mt. Lemmon (1.0m), VLA @ 8.46 GHz, Suzaku, Sampurnanand (1.04m), Gao-Mei-Gu (2.4m), CTIO (1.3m), ICSP VLF, AZT-11

Comments:

References:

BAT: GCN 9223; GCN 9231
XRT: GCN 9223; GCN 9232; GCN 9237; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 9223; GCN 9234
Radio: GCN 9260 (VLA)
Redshift: GCN 9243 (Gemini-South); GCN 9250 (WHT)
Host:
Other: GCN Report 221.1