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GRB 081028A

Time: 00:25:00
Trigger Number: 332851
Burst Advocate: Cristiano Guidorzi

BAT Data:

RA: a 121.893
08:07:34.3
Dec: a 2.305
02:18:18.0
90% Error Radius: b 1.2
T90: c 260
Fluence: d 37 (2)
1s Peak Photon Flux: e 0.5 (0.1)
Photon Index: f 1.25, PL (0.38)

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)

XRT Data:

RA: a 08:07:34.76
Dec: a 02:18:29.8
90% Error Radius: b 1.5
Time to First Observation: c 190.7
Early Flux: d 110
11 Hour Flux: d n/a
24 Hour Flux: d n/a
Initial Temporal Index: ~0.5
Spectral Index (Gamma): 2.51
Column Density (NH): e 0.80

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 201
V Magnitude: V=20.23
Other Filter Magnitudes: B=20.19
U=21.21
UVW1>19.01
UVM2>18.70
UVW2>19.01
White>20.05

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
3.038 (Magellan/Clay: absorption)
Host Galaxy:
Other Observatory Detections:
ESO/MPI (2.2m), NOT, Magellan/Clay (6.5m), Shajn Telescope, PAIRITEL (1.3m)

Comments:

UVOT: no initial detection, but detection of a re-brightening of the afterglow

References:

BAT: GCN 8421; GCN 8428
XRT: GCN 8421; GCN 8427; GCN 8429
UVOT: GCN 8421; GCN 8430; GCN 8431
Radio:
Redshift: GCN 8434 (Magellan/Clay)
Host:
Other: GCN Report 176.1