GRB 170531B
Time: 22:02:09
Trigger Number: 755354
Burst Advocate: Phil Evans
BAT Data:
| RA: a | 286.901 19:07:36.2 |
| Dec: a | -16.414 -16:24:50.4 |
| 90% Error Radius: b | 1.5 |
| T90: c | 164.13 |
| Fluence: d | 20 (2) |
| 1s Peak Photon Flux: e | 0.8 (0.2) |
| Photon Index: f | 1.95, PL (0.14) |
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 | 19:07:32.09 |
| Dec: a | -16:25:07.9 |
| 90% Error Radius: b | 1.4 |
| Time to First Observation: c | 140.90 |
| Early Flux: d | 273 |
| 11 Hour Flux: d | 0.03914964 |
| 24 Hour Flux: d | 0.02130491 |
| Initial Temporal Index: | -0.7799 |
| Spectral Index (Gamma): | 2.06685 |
| Column Density (NH): e | 0.00000000000431107 |
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 | 19:07:32.10 |
| Dec: a | -16:25:05.8 |
| 90% Error Radius: b | 0.1 |
| Time to First Observation: c | 152 |
| V Magnitude: | V>18.88 |
| Other Filter Magnitudes: | B>19.77 U>19.17 UVW1>18.91 UVM2>18.88 UVW2>19.14 White>21.03 White_fc=20.50 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:2.366 (GTC: absorption)Host Galaxy:
Consistent with GTC results (WHT)
Other Observatory Detections:
MASTER-Kislovodsk, CrAO (Zeiss-1000), GTC (10.4m), MPG (2.2m), ISON/Terskol (0.8m), WHT (4.2m)
Comments:
References:
BAT: GCN 21171; GCN 21186
XRT: GCN 21171; GCN 21175; GCN 21182; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 21171; GCN 21188
Radio:
Redshift: GCN 21177 (GTC); GCN 21209 (WHT)
Host:
Other: