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

GRB 140311B

Redshift:
Host Galaxy:
Other Observatory Detections:
Nanshan (1m), MASTER-II, Fermi (GBM)

Time: 21:14:29
Trigger Number: 591392
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)
252.333
16:49:19.9
52.733
52:43:58.8
1.2 70 n/a (n/a) n/a (n/a) 1.12, PL (0.15)

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)
16:49:18.01 52:43:27.3 1.5 3394.67 n/a 0.014411459 0.0039367257 -1.663 1.68422 1.642175

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 3398 V>20.0 B>20.4
U>20.2
UVW1>20.3
UVM2>20.2
UVW2>20.1
White>21.4

a arcsec; b seconds

Comments:

Due to an observing constraint, Swift did not slew until T0+55 minutes.
UVOT: no detection

References:

BAT: GCN 15945; GCN 15979
XRT: GCN 15950; GCN 15951; GCN 15958; GCN 15963; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 15972
Radio:
Redshift:
Host:
Other: