GRB 120909A
Time: 01:42:03
Trigger Number: 533060
Burst Advocate: Stefan Immler
BAT Data:
| RA: a | 275.735 18:22:56.4 |
| Dec: a | -59.432 -59:25:55.2 |
| 90% Error Radius: b | 1.2 |
| T90: c | n/a |
| Fluence: d | 68 (2) |
| 1s Peak Photon Flux: e | 1.8 (0.3) |
| Photon Index: f | 1.39, PL (0.06) |
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 | 18:22:56.77 |
| Dec: a | -59:26:55.0 |
| 90% Error Radius: b | 1.4 |
| Time to First Observation: c | 93.42 |
| Early Flux: d | 755 |
| 11 Hour Flux: d | 0.2152997 |
| 24 Hour Flux: d | 0.0619185 |
| Initial Temporal Index: | -1.209 |
| Spectral Index (Gamma): | 2.06709 |
| Column Density (NH): e | 20.6609 |
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 | 3308 |
| V Magnitude: | V>20.2 |
| Other Filter Magnitudes: | B>21.5 U>21.4 UVW1>21.6 UVM2>21.4 UVW2>21.6 White=20.75 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:3.93 (VLT: absorption)Host Galaxy:
Other Observatory Detections:
PROMPT, MPG/ESO (2.2m), VLT, Konus-Wind, Fermi (GBM), TAROT (25cm)
Comments:
Because of an earth limb constraint, Swift slewed away before UVOT could take its initial exposures.
References:
BAT: GCN 13727; GCN 13733
XRT: GCN 13727; GCN 13732; GCN 13734; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 13735
Radio:
Redshift: GCN 13730 (VLT)
Host:
Other: