GRB 050820A
Time: 06:34:53
Trigger Number: 151207
Burst Advocate: Mat Page
BAT Data:
| RA: a | 337.416 22:29:39.8 |
| Dec: a | 19.560 19:33:36.0 |
| 90% Error Radius: b | 1.1 |
| T90: c | 26 |
| Fluence: d | 34.40 (2.42) |
| 1s Peak Photon Flux: e | 2.45 (0.23) |
| Photon Index: f | 1.25, 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)
BAT Light Curve:
XRT Data:
| RA: a | 22:29:38.12 |
| Dec: a | 19:33:37.0 |
| 90% Error Radius: b | 1.4 |
| Time to First Observation: c | n/a |
| Early Flux: d | n/a |
| 11 Hour Flux: d | 0.9154947 |
| 24 Hour Flux: d | 0.36135421 |
| Initial Temporal Index: | -2.206 |
| Spectral Index (Gamma): | 1.96878 |
| Column Density (NH): e | 4.16529 |
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 | 80 |
| V Magnitude: | V=18.2 |
| Other Filter Magnitudes: | B=19.0 U=18.3 UVW1=20.4 UVW2>21.0 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:2.612 (Keck: absorption)Host Galaxy:
2.6147 (VLT: absorption)
Other Observatory Detections:
Palomar (60"), Keck, RAPTOR, WIRO, RTT150, VLT, PROMPT, Konus-Wind, VLA @ 8.46 GHz
Comments:
BAT: second, larger, harder episode of emission seen
References:
BAT: GCN 3830; GCN 3835; GCN 3858; TS table 9/13/05, 9/24/05; arXiv:0707.4626
XRT: GCN 3830; GCN 3837; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 3830; GCN 3838
Radio: GCN 3847
Redshift: GCN 3833 (Keck); GCN 3860 (VLT)
Host:
Other: