GRB 250916A
Time: 13:29:21
Trigger Number: Fermi
Burst Advocate:
BAT Data:
| RA: a | 29.3 01:57:12.0 |
| Dec: a | 40.3 40:18:00.0 |
| 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 | 01:46:16.99 |
| Dec: a | 36:09:54.6 |
| 90% Error Radius: b | 3.7 |
| Time to First Observation: c | 101900 |
| Early Flux: d | 0.092 |
| 11 Hour Flux: d | 0.091704777 |
| 24 Hour Flux: d | 0.091704103 |
| Initial Temporal Index: | -0.000006932 |
| Spectral Index (Gamma): | 1.957980671 |
| Column Density (NH): e | 0.54161624796757 |
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 | 102120 |
| V Magnitude: | V>19.4 |
| Other Filter Magnitudes: | U=20.5 White=21.1 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
Other Observatory Detections:
Comments:
Fermi: GCN 41839
XRT: the source is below the RASS limit and shows no definitive signs of fading. However, given its coincident location with the fading optical source, it is indeed likely to be the afterglow.
References:
BAT:
XRT: GCN 41862; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 41938
Radio:
Redshift:
Host:
Other: