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GRB 121027A

Redshift:
1.773 (arXiv:1302.2352v1)
1.77 (Gemini-South: absorption)
1.773 (VLT: emission and absorption)
Host Galaxy:
Other Observatory Detections:
MAXI/GSC, Anglo-Australian Telescope, MPG/ESO (2.2m), CTIO (1.3m), Gemini-South, VLT

Time: 07:32:29
Trigger Number: 536831
Burst Advocate: Phil Evans

Burst Alert Telescope (BAT):

RA
(J2000)
Dec
(J2000)
90% Error a
Radius
T90 b Fluence c
(15-150 keV)
1-sec Peak d
Photon Flux
(15-150 keV)
Photon Index e
(15-150 keV)
63.598
04:14:23.5
-58.839
-58:50:20.4
1.0 62.6 20 (1) 1.3 (0.2) 1.82, PL (0.09)

90% error in parentheses,
a arcmin; b seconds; c 10-7 erg/cm2; d ph/cm2/sec; e PL = simple power-law, CPL = cutoff power-law

X-Ray Telescope (XRT):

RA
(J2000)
Dec
(J2000)
90% Error a
Radius
Time to First b
Observation
Early Flux c
(0.3-10 keV)
11 Hour Flux c
(0.3-10 keV)
24 Hour Flux c
(0.3-10 keV)
Initial d
LC Index
Spectral
Index
(Gamma)
Column e
Density
(NH)
04:14:23.47 -58:49:46.8 1.4 67.38 610 0.24509127 0.18853735 -2.334 2.37144 11.9499

a arcsec; b seconds; c 10-11 erg/cm2/s; d temporal; e 1021 cm-2

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.

» XRT GRB Live Catalogue
» XRT Light Curves
» XRT Spectra

UltraViolet/Optical Telescope (UVOT):

RA
(J2000)
Dec
(J2000)
90% Error a
Radius
Time to First b
Observation
Magnitude Other Filter
Magnitudes
n/a n/a n/a 77 V>19.5 B>19.7
U>20.6
UVW1>19.8
White=21.55

a arcsec; b seconds

Comments:

UVOT: Possible Detection

References:

BAT: GCN 13906; GCN 13907; GCN 13910
XRT: GCN 13906; GCN 13907; GCN 13916; GCN 13921; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 13906; GCN 13907; GCN 13932
Radio:
Redshift: GCN 13929 (Gemini-South); GCN 13930 (VLT); arXiv:1302.2352v1
Host:
Other:

BAT Light Curve:

BAT Light Curve for GRBblc/121027A.png