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

GRB 120927A

Redshift:
Host Galaxy:
Other Observatory Detections:

Time: 22:40:46
Trigger Number: 534815
Burst Advocate: Alessandro Maselli

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)
136.606
09:06:25.4
0.420
00:25:12.0
1.0 43 26 (3) 1.6 (0.2) 0.63, CPL (0.38)

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)
09:06:27.30 00:24:58.3 1.4 153.72 n/a 0.06962204 0.032276968 n/a 1.7477 2.76364

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 158 V>19.1 B>20.1
U>20.2
UVW1>19.6
UVM2>19.6
UVW2>20.3
White>21.0

a arcsec; b seconds

Comments:

UVOT: no detection

References:

BAT: GCN 13822; GCN 13828
XRT: GCN 13822; GCN 13824; GCN 13826; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 13822; GCN 13829; GCN 13830
Radio:
Redshift:
Host:
Other: GCN Report 396.1

BAT Light Curve:

BAT Light Curve for GRBblc/120927A.png