GRB 230204B
Time: 21:47:51
Trigger Number: MAXI
Burst Advocate:
BAT Data:
| RA: a | 197.581 13:10:19.4 |
| Dec: a | -21.752 -21:45:07.2 |
| 90% Error Radius: b | n/a |
| T90: c | n/a |
| Fluence: d | n/a (n/a) |
| 1s Peak Photon Flux: e | n/a (n/a) |
| Photon Index: f | n/a (n/a) |
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 | 13:10:34.58 |
| Dec: a | -21:42:58.9 |
| 90% Error Radius: b | 7.4 |
| Time to First Observation: c | 80500 |
| Early Flux: d | n/a |
| 11 Hour Flux: d | 0.0426796896 |
| 24 Hour Flux: d | 0.0302743014 |
| Initial Temporal Index: | -0.4402 |
| Spectral Index (Gamma): | 1.19597 |
| Column Density (NH): e | 1.040410106 |
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
UVOT Data:
| RA: a | n/a |
| Dec: a | n/a |
| 90% Error Radius: b | n/a |
| Time to First Observation: c | 80000 |
| V Magnitude: | V>19.1 |
| Other Filter Magnitudes: | B>20.1 U>19.8 UVW1>20.1 UVM2>20.9 UVW2>20.7 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
Other Observatory Detections:
Comments:
XRT: The source is below the RASS limit but does not show definitive signs of fading. This is most likely the afterglow, given also the reported redshift of z=2.14 (Saccardi et al. GCN Circ. 33281) but further observations are required to assess for fading.
UVOT: no detection
References:
BAT:
XRT: GCN 33285; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 33292
Radio:
Redshift:
Host:
Other: GCN 33265 (MAXI)