GRB 050509B
Time: 04:00:19
Trigger Number: 118749
Burst Advocate: Evert Rol
BAT Data:
| RA: a | 189.046 12:36:11.0 |
| Dec: a | 28.974 28:58:26.4 |
| 90% Error Radius: b | 2.5 |
| T90: c | 0.073 |
| Fluence: d | 0.09 (0.02) |
| 1s Peak Photon Flux: e | 0.28 (0.10) |
| Photon Index: f | 1.57, PL (0.38) |
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 | 12:36:13.85 |
| Dec: a | 28:59:03.7 |
| 90% Error Radius: b | 3.8 |
| Time to First Observation: c | n/a |
| Early Flux: d | n/a |
| 11 Hour Flux: d | 0.0021073572 |
| 24 Hour Flux: d | 0.0015000843 |
| Initial Temporal Index: | -0.4357 |
| Spectral Index (Gamma): | 1.88486 |
| Column Density (NH): e | 0.766623 |
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 | 50 |
| V Magnitude: | V>21.1 |
| Other Filter Magnitudes: | B>21.8 U>21.8 UVW1>22.3 UVM2>22.2 UVW2>22.7 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:0.225 (Keck: absorption)Host Galaxy:
ellipticalOther Observatory Detections:
Keck
Comments:
short GRB
XRT: first short GRB localization
redshift & host: probable, but not definitive
References:
BAT: GCN 3381; GCN 3385; TS table 9/13/05, 9/24/05; arXiv:0707.4626
XRT: GCN 3381; GCN 3383; GCN 3395; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 3381; GCN 3397; GCN 3412
Radio:
Redshift: GCN 3390; GCN 3399 (Keck)
Host: GCN 3386
Other: Nature, 437, 851, 2005