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GRB 120404A

Redshift:
2.876 (Gemini-North: absorption)
~2.88 (VLT/UT2: absorption)
Host Galaxy:
Other Observatory Detections:
Faulkes North (2m), Gemini-North, TNT, MITSuME (50cm), Murikabushi (1m), VLT/UT2, Mt John University Observatory (61cm), MPG/ESO (2.2m), MASTER II, EVLA @ 22 GHz, ARIES (1.04m), ISON-Blagoveschensk Observatory (0.25m and 0.4m), Sayan Observatory

Time: 12:51:02
Trigger Number: 519380
Burst Advocate: Giulia Stratta

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)
235.002
15:40:00.5
12.883
12:52:58.8
1.2 38.7 16 (1) 1.2 (0.2) 1.85, PL (0.13)

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)
15:40:02.34 12:53:05.9 1.4 130.02 73.4 0.021299642 0.0052762 -2.17 1.89579 5.12667

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
15:40:02.29 12:53:06.3 0.65 138 V=17.69 B=19.22
U=19.90
UVW1>20.3
UVM2>21.5
UVW2>22.1
White=19.43

a arcsec; b seconds

Comments:

References:

BAT: GCN 13208; GCN 13220
XRT: GCN 13208; GCN 13218; GCN 13222; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 13208; GCN 13226
Radio: GCN 13231 (EVLA)
Redshift: GCN 13213 (Gemini-North); GCN 13217 (Gemini-North); GCN 13227 (VLT/UT2)
Host:
Other: GCN Report 372.1

BAT Light Curve:

BAT Light Curve for GRBblc/120404A.png