GRB 150831B
Time: 22:19:27
Trigger Number: 653978
Burst Advocate: Frank Marshall
BAT Data:
| RA: a | 271.030 18:04:07.2 |
| Dec: a | -27.243 -27:14:34.8 |
| 90% Error Radius: b | 2.0 |
| T90: c | 6.2 |
| Fluence: d | 14 (2) |
| 1s Peak Photon Flux: e | 6.1 (1.1) |
| Photon Index: f | 1.87, PL (0.19) |
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 | 18:04:09.49 |
| Dec: a | -27:15:32.4 |
| 90% Error Radius: b | 3.7 |
| Time to First Observation: c | 3085.54 |
| Early Flux: d | n/a |
| 11 Hour Flux: d | 0.0112851315 |
| 24 Hour Flux: d | 0.00318172995 |
| Initial Temporal Index: | -1.623 |
| Spectral Index (Gamma): | 2.75802 |
| Column Density (NH): e | 21.36381 |
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 | 3089 |
| V Magnitude: | V>18.2 |
| Other Filter Magnitudes: | B>20.3 U>19.4 UVW1>19.2 UVM2>20.2 White_fc>20.6 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
Other Observatory Detections:
Fermi (GBM)
Comments:
Due to an observing constraint, Swift did not slew until T0+49.6 minutes.
UVOT: no detection
References:
BAT: GCN 18215; GCN 18223
XRT: GCN 18217; GCN 18222; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 18227
Radio:
Redshift:
Host:
Other: