Menu

GRB 111228A

Time: 15:44:43
Trigger Number: 510649
Burst Advocate: Tilan Ukwatta

BAT Data:

RA: a 150.063
10:00:15.1
Dec: a 18.284
18:17:02.4
90% Error Radius: b 1.4
T90: c 101.20
Fluence: d 85 (2)
1s Peak Photon Flux: e 12.4 (0.5)
Photon Index: f 2.27, PL (0.06)

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 111228A

XRT Data:

RA: a 10:00:16.10
Dec: a 18:17:52.2
90% Error Radius: b 1.4
Time to First Observation: c 145.07
Early Flux: d 882
11 Hour Flux: d 0.3853548
24 Hour Flux: d 0.1496862
Initial Temporal Index: -5.445
Spectral Index (Gamma): 2.03824
Column Density (NH): e 2.59076

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 10:00:16.01
Dec: a 18:17:51.8
90% Error Radius: b 0.75
Time to First Observation: c 155
V Magnitude: V=17.73
Other Filter Magnitudes: B=17.71
U=16.70
UVW1=16.59
UVM2=16.84
White=17.30

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
0.714 (MMT: absorption)
0.716 (Gemini-South: absorption)
0.7156 (TNG: absorption)
0.713 (NOT: absorption)
0.71627 (VLT: absorption)
Host Galaxy:
Other Observatory Detections:
TNT, TAROT (25cm), MITSuME (50cm), Fermi (GBM), ARIES NainiTal (1.04m), Asiago Telescope (1.82m), NOT (2.5m), DAO (16"), IAC80 (82cm), GRAS 017 (17"), MASTER II, MPG/ESO (2.2m), MMT (6.5m), PAIRITEL (1.3m), Gemini-South, TNG, GMG (2.4m), T100 (1.0m), VLT, Palomar (60"), Liverpool (2m), PROMPT, CTIO (1.3), Kanata (1.5m), Konus-Wind, Mt. Lemmon (1m), Devasthal Fast Optical Telescope (1.3m), ISON-NM (0.45m), TNG (3.6m)

Comments:

References:

BAT: GCN 12737; GCN 12749
XRT: GCN 12737; GCN 12747; GCN 12766; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 12737; GCN 12752
Radio:
Redshift: GCN 12759 (MMT); GCN 12761 (Gemini-South); GCN 12764 (NOT); GCN12770 (VLT)
Host:
Other: GCN Report 367.1