GRB 121209A
Redshift:
Host Galaxy:
Host Galaxy:
I = 23.2 (Keck I, possible host)Other Observatory Detections:
MPG/ESO (2.2m), MAXI/GSC
Time: 21:59:11
Trigger Number: 540964
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) |
|---|---|---|---|---|---|---|
| 326.800 21:47:12.0 |
-8.232 -08:13:55.2 |
1.7 | 42.7 | 29 (1) | 3.4 (0.3) | 1.43, PL (0.08) |
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) |
|---|---|---|---|---|---|---|---|---|---|
| 21:47:08.93 | -08:14:07.1 | 1.4 | 91.98 | n/a | 0.1448368 | 0.0564024 | 0.6089 | 2.29895 | 5.22617 |
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 | 96 | V>20.3 | B>21.1 U>21.6 UVW1>21.5 UVM2>22.3 UVW2>21.8 White>21.7 |
a arcsec; b seconds
Comments:
UVOT: no detection
References:
BAT: GCN 14045; GCN 14052
XRT: GCN 14045; GCN 14051; GCN 14053; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 14046; GCN 14086
Radio:
Redshift:
Host: GCN 14056 (Keck I)
Other: GCN Report 422.1