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GRB 081121

Time: 20:35:32
Trigger Number: 335105
Burst Advocate: Sam Oates

BAT Data:

RA: a 89.282
05:57:07.7
Dec: a -60.612
-60:36:43.2
90% Error Radius: b 1.4
T90: c 14
Fluence: d 41 (3)
1s Peak Photon Flux: e 4.4 (1.0)
Photon Index: f 0.43, CPL (0.54)

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 081121

XRT Data:

RA: a 05:57:06.09
Dec: a -60:36:10.0
90% Error Radius: b 1.4
Time to First Observation: c 2813.20
Early Flux: d n/a
11 Hour Flux: d 0.4234206
24 Hour Flux: d 0.13658254
Initial Temporal Index: -1.45
Spectral Index (Gamma): 1.89531
Column Density (NH): e 1.04036

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 05:57:06.15
Dec: a -60:36:10.0
90% Error Radius: b 0.6
Time to First Observation: c 2816
V Magnitude: V=17.58
Other Filter Magnitudes: B=18.26
U=17.62
UVW1=20.60
UVM2>20.09
UVW2>20.78
White=17.93

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
2.512 (Magellan/Clay: aborption)
Host Galaxy:
Other Observatory Detections:
ROTSE-IIIc, ESO/MPI (2.2m), Magellan/Clay (6.5m), Fermi, CTIO (1.3m), Konus-Wind

Comments:

Due to an observing constraint, Swift will not slew until T0+45.2 minutes.

References:

BAT: GCN 8537; GCN 8539
XRT: GCN 8541; GCN 8543; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 8538; GCN 8544
Radio:
Redshift: GCN 8542 (Magellan/Clay)
Host:
Other: GCN Report 182.1