GRB 180818B
Time: 12:30:18
Trigger Number: 853882
Burst Advocate: Frank Marshall
BAT Data:
| RA: a | 104.227 06:56:54.5 |
| Dec: a | 39.310 39:18:36.0 |
| 90% Error Radius: b | 1.7 |
| T90: c | 134.4 |
| Fluence: d | 23 (2) |
| 1s Peak Photon Flux: e | 1.2 (0.2) |
| Photon Index: f | 1.77, PL (0.12) |
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)
XRT Data:
| RA: a | 06:56:53.89 |
| Dec: a | 39:18:56.4 |
| 90% Error Radius: b | 1.5 |
| Time to First Observation: c | 203.84 |
| Early Flux: d | 130 |
| 11 Hour Flux: d | 0.18586183 |
| 24 Hour Flux: d | 0.078180795 |
| Initial Temporal Index: | -3.518 |
| Spectral Index (Gamma): | 1.76901 |
| Column Density (NH): e | 1.26959000041981 |
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 | 212 |
| V Magnitude: | V>19.8 |
| Other Filter Magnitudes: | B>1.9 U>19.6 UVW1>19.9 UVM2>20.5 UVW2>20.3 White>21.1 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
Other Observatory Detections:
Fermi (GBM), OSN (1.5m)
Comments:
UVOT: no detection
References:
BAT: GCN 23149; GCN 23155
XRT: GCN 23149; GCN 23151; GCN 23156; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 23149; GCN 23152
Radio:
Redshift:
Host:
Other: