GRB 210820A
Time: 17:38:00
Trigger Number: 1069551
Burst Advocate: Andy Beardmore
BAT Data:
| RA: a | 20.622 01:22:29.3 |
| Dec: a | 4.642 04:38:31.2 |
| 90% Error Radius: b | 3.4 |
| T90: c | 196.8 |
| Fluence: d | 15 (2) |
| 1s Peak Photon Flux: e | 0.8 (0.2) |
| Photon Index: f | 2.26, PL (0.22) |
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 | 01:22:33.51 |
| Dec: a | 04:36:27.5 |
| 90% Error Radius: b | 2.5 |
| Time to First Observation: c | 125.01 |
| Early Flux: d | 375 |
| 11 Hour Flux: d | 0.0128561472 |
| 24 Hour Flux: d | 0.0061547904 |
| Initial Temporal Index: | -2.937 |
| Spectral Index (Gamma): | 2.27505 |
| Column Density (NH): e | 0.358588252885 |
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 | 01:22:33.48 |
| Dec: a | 04:36:28.3 |
| 90% Error Radius: b | 0.45 |
| Time to First Observation: c | 131 |
| V Magnitude: | V=18.86 |
| Other Filter Magnitudes: | B=18.57 U=17.60 UVW1>19.0 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
Other Observatory Detections:
HJT (1.5m), CAHA (2.2m)
Comments:
References:
BAT: GCN 30664; GCN 30675
XRT: GCN 30664; GCN 30667; GCN 30668; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 30664; GCN 30686
Radio:
Redshift:
Host:
Other: