GRB 150821A
Time: 09:44:00
Trigger Number: 652847
Burst Advocate: Nora Troja
BAT Data:
| RA: a | 341.913 22:47:39.1 |
| Dec: a | -57.883 -57:52:58.8 |
| 90% Error Radius: b | 1.7 |
| T90: c | 172.1 |
| Fluence: d | 7.9 (1.9) |
| 1s Peak Photon Flux: e | n/a (n/a) |
| Photon Index: f | 2.10, PL (0.37) |
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 | 22:47:39.13 |
| Dec: a | -57:53:38.1 |
| 90% Error Radius: b | 1.4 |
| Time to First Observation: c | 243.26 |
| Early Flux: d | 349 |
| 11 Hour Flux: d | 0.07879995 |
| 24 Hour Flux: d | 0.0288219258 |
| Initial Temporal Index: | -0.655 |
| Spectral Index (Gamma): | 2.21622 |
| Column Density (NH): e | 21.9065 |
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 | 22:47:39.18 |
| Dec: a | -57:53:38.1 |
| 90% Error Radius: b | 0.61 |
| Time to First Observation: c | 251 |
| V Magnitude: | V=17.21 |
| Other Filter Magnitudes: | B=17.48 U=16.70 UVW1=17.62 UVM2>19.8 UVW2=19.85 White=16.59 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:0.755 (VLT: absorption)Host Galaxy:
Other Observatory Detections:
VLT, Fermi (GBM), MPG (2.2m), Siding Springs (1m), Konus-Wind
Comments:
References:
BAT: GCN 18186; GCN 18196
XRT: GCN 18186; GCN 18191; GCN 18194; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 18186; GCN 18192; GCN 18224
Radio:
Redshift: GCN 18187 (VLT)
Host:
Other: