GRB 121209A
Time: 21:59:11
Trigger Number: 540964
Burst Advocate: Alessandro Maselli
BAT Data:
| RA: a | 326.800 21:47:12.0 |
| Dec: a | -8.232 -08:13:55.2 |
| 90% Error Radius: b | 1.7 |
| T90: c | 42.7 |
| Fluence: d | 29 (1) |
| 1s Peak Photon Flux: e | 3.4 (0.3) |
| Photon Index: f | 1.43, PL (0.08) |
90% error in parentheses,
a J2000;
b arcmin;
c seconds;
d 10-7 erg/cm2 (15-150 keV);
e ph/cm2/sec (15-150 keV);
f PL = simple power-law, CPL = cutoff power-law (15-150 keV)
BAT Light Curve:
XRT Data:
| RA: a | 21:47:08.93 |
| Dec: a | -08:14:07.1 |
| 90% Error Radius: b | 1.4 |
| Time to First Observation: c | 91.98 |
| Early Flux: d | n/a |
| 11 Hour Flux: d | 0.1448368 |
| 24 Hour Flux: d | 0.0564024 |
| Initial Temporal Index: | 0.6089 |
| Spectral Index (Gamma): | 2.29895 |
| Column Density (NH): e | 5.22617 |
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.
a J2000;
b arcsec;
c seconds;
d 10-11 erg/cm2/s (0.3-10 keV);
e 1021 cm-2
» XRT GRB Live Catalogue
» XRT Light Curves
» XRT Spectra
UVOT Data:
| RA: a | n/a |
| Dec: a | n/a |
| 90% Error Radius: b | n/a |
| Time to First Observation: c | 96 |
| V Magnitude: | V>20.3 |
| Other Filter Magnitudes: | B>21.1 U>21.6 UVW1>21.5 UVM2>22.3 UVW2>21.8 White>21.7 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
I = 23.2 (Keck I, possible host)Other Observatory Detections:
MPG/ESO (2.2m), MAXI/GSC
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