The Swift Gamma-Ray Burst Mission Italian site U.K. site

GRB 140311A

Redshift:
4.95 (Gemini-South: absorption)
~ 5 (NOT: absorption)
4.954 (Gemini-North)
Host Galaxy:
Other Observatory Detections:
Nanshan (1m), Zadko (100cm), NOT, Kottamia (188cm), Gemini-South, Gemini-North, HJT (1.5m), VLA @ 21.8 GHz

Time: 21:05:16
Trigger Number: 591390
Burst Advocate: Judy Racusin

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)
209.293
13:57:10.3
0.607
00:36:25.2
3.8 71.4 23 (3) 1.3 (0.5) 1.67, PL (0.23)

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)
13:57:13.25 00:38:30.8 1.5 9500 n/a 0.1014624 0.036819588 -1.299 1.62664 0.0000000000139543

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 9540 V>19.0 B>21.3
UVW1>19.8
UVW2>21.2
White>22.0

a arcsec; b seconds

Comments:

Due to an observing constraint, Swift did not slew until T0+50.6 minutes
UVOT: no detection

References:

BAT: GCN 15944; GCN 15962
XRT: GCN 15959; GCN 15968; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 15973
Radio: GCN 15985 (VLA)
Redshift: GCN 15961 (Gemini-South); GCN 15964 (NOT); GCN 15966 (Gemini-North)
Host:
Other:

BAT Light Curve:

BAT Light Curve for GRBblc/140311A.png