GRB 180821A
Time: 16:40:34
Trigger Number: 854578
Burst Advocate: Aaron Tohuvavohu
BAT Data:
| RA: a | 7.739 00:30:57.4 |
| Dec: a | -38.612 -38:36:43.2 |
| 90% Error Radius: b | 2.3 |
| T90: c | 64.00 |
| Fluence: d | 14 (3) |
| 1s Peak Photon Flux: e | n/a (n/a) |
| Photon Index: f | 1.79, PL (0.31) |
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 | 00:31:09.64 |
| Dec: a | -38:37:37.7 |
| 90% Error Radius: b | 1.6 |
| Time to First Observation: c | 210.33 |
| Early Flux: d | 36.7 |
| 11 Hour Flux: d | 0.05259072 |
| 24 Hour Flux: d | 0.035938368 |
| Initial Temporal Index: | -3.932 |
| Spectral Index (Gamma): | 2.89113 |
| Column Density (NH): e | 3.765445 |
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 | 219 |
| V Magnitude: | V>17.7 |
| Other Filter Magnitudes: | B>19.3 U>18.6 UVW1>19.3 UVM2>20.5 UVW2>20.3 White>21.1 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
Other Observatory Detections:
Comments:
UVOT: no detection
References:
BAT: GCN 23158; GCN 23166
XRT: GCN 23158; GCN 23162; GCN 23164; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 23158; GCN 23167
Radio:
Redshift:
Host:
Other: