GRB 090927
Time: 10:07:16
Trigger Number: 370846
Burst Advocate: Dirk Grupe
BAT Data:
| RA: a | 343.929 22:55:43.0 |
| Dec: a | -70.973 -70:58:22.8 |
| 90% Error Radius: b | 1.6 |
| T90: c | 2.2 |
| Fluence: d | 2.0 (0.3) |
| 1s Peak Photon Flux: e | 2.0 (0.2) |
| Photon Index: f | 1.80, PL (0.20) |
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 | 22:55:53.44 |
| Dec: a | -70:58:48.9 |
| 90% Error Radius: b | 1.5 |
| Time to First Observation: c | 2136.98 |
| Early Flux: d | n/a |
| 11 Hour Flux: d | 0.05199994 |
| 24 Hour Flux: d | 0.020505774 |
| Initial Temporal Index: | -0.28 |
| Spectral Index (Gamma): | 2.06549 |
| Column Density (NH): e | 1.04197 |
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 | 22:55:53.41 |
| Dec: a | -70:58:49.3 |
| 90% Error Radius: b | 0.63 |
| Time to First Observation: c | 2121 |
| V Magnitude: | V=19.0 |
| Other Filter Magnitudes: | B=19.50 U=18.77 UVW1>19.63 UVM2>19.89 UVW2>18.84 White=19.13 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:1.37 (VLT: absorption)Host Galaxy:
Other Observatory Detections:
Zadko (1.0m), VLT, Faulkes South, Fermi (GBM)
Comments:
Due to an observing constraint, Swift will not slew until T0+33.8 minutes. There will be no XRT or UVOT data until this time.
References:
BAT: GCN 9945; GCN 9955
XRT: GCN 9950; GCN 9952; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 9946; GCN 9954
Radio:
Redshift: GCN 9958 (VLT)
Host:
Other: GCN Report 252.1