GRB 121102A
Host Galaxy:
Other Observatory Detections:
INTEGRAL
Time: 02:27:02
Trigger Number: 537266
Burst Advocate: Valerio D'Elia
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) |
|---|---|---|---|---|---|---|
| 270.896 18:03:35.0 |
-16.951 -16:57:03.6 |
1.0 | 24.7 | 19 (1) | 2.3 (0.2) | 1.88, PL (0.07) |
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) |
|---|---|---|---|---|---|---|---|---|---|
| 18:03:36.22 | -16:57:28.4 | 1.4 | 47.73 | 345 | 0.033925059 | 0.014773659 | -3.296 | 1.77855 | 8.00045 |
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.
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 | 58 | V>20.0 | B>21.4 U>20.9 UVW1>20.8 UVM2>21.1 UVW2>21.2 White>21.4 |
a arcsec; b seconds
Comments:
This event has all appearances of a GRB: hard BAT spectrum, bright XRT initial detection and fading. Still, we note that the galactic coordinates are l=12 deg, b=2.5 deg, consistent with a galactic origin. We believe it is a GRB, but can not rule out a new galactic transient.
UVOT: no detection
References:
BAT: GCN 13938; GCN 13942
XRT: GCN 13938; GCN 13943; GCN 13945; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 13938; GCN 13948
Radio:
Redshift:
Host:
Other: GCN Report 401.1