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GRB 090530

Time: 03:18:18
Trigger Number: 353567
Burst Advocate: John Cannizzo

BAT Data:

RA: a 179.400
11:57:36.0
Dec: a 26.590
26:35:24.0
90% Error Radius: b 1.9
T90: c 48
Fluence: d 11 (1)
1s Peak Photon Flux: e 2.5 (0.3)
Photon Index: f 1.61, PL (0.17)

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 090530

XRT Data:

RA: a 11:57:40.48
Dec: a 26:35:36.9
90% Error Radius: b 1.4
Time to First Observation: c n/a
Early Flux: d 64.2
11 Hour Flux: d 0.10044405
24 Hour Flux: d 0.04735185
Initial Temporal Index: -5.158
Spectral Index (Gamma): 2.03975
Column Density (NH): e 0.811758

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 11:57:40.50
Dec: a 26:35:38.4
90% Error Radius: b 0.5
Time to First Observation: c 83
V Magnitude: V=17.69
Other Filter Magnitudes: B=18.60
U=17.46
UVW1=20.15
UVM2=20.31
UVW2=21.31
White=17.43

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
~1.266 (VLT)
Host Galaxy:
Other Observatory Detections:
ROTSE-IIIb, PAIRITEL (1.3m), GRAS002 (0.30m), NOT, MPI/ESO (2.2m), Mt. Lemmon (1.0m), RAPTOR, RTT150, Dark Sky Observatory (14"), VLT

Comments:

References:

BAT: GCN 9438; GCN 9443
XRT: GCN 9438; GCN 9445; GCN 9451; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 9438; GCN 9450
Radio:
Redshift: GCN 15571 (VLT)
Host:
Other: GCN Report 222.1