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GRB 110820A

Time: 17:38:27
Trigger Number: 501095
Burst Advocate: Eleonora Troja

BAT Data:

RA: a 343.203
22:52:48.7
Dec: a 70.298
70:17:52.8
90% Error Radius: b 2.1
T90: c 256
Fluence: d 8.2 (1.5)
1s Peak Photon Flux: e 0.4 (0.1)
Photon Index: f 1.92, PL (0.28)

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 110820A

XRT Data:

RA: a 22:52:46.10
Dec: a 70:17:55.1
90% Error Radius: b 1.8
Time to First Observation: c n/a
Early Flux: d n/a
11 Hour Flux: d 0.029121918
24 Hour Flux: d 0.017799051
Initial Temporal Index: -0.6311
Spectral Index (Gamma): 1.81873
Column Density (NH): e 5.01376

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 139
V Magnitude: V>21.1
Other Filter Magnitudes: B>22.0
U>21.8
UVW1>21.8
UVM2>20.6
UVW2>21.2

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
Host Galaxy:
Other Observatory Detections:

Comments:

UVOT: no detection

References:

BAT: GCN 12288; GCN 12292
XRT: GCN 12288; GCN 12291; GCN 12294; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 12288; GCN 12298
Radio:
Redshift:
Host:
Other: