GRB 090531B
Time: 18:35:56
Trigger Number: 353728
Burst Advocate: Jay Cummings
BAT Data:
| RA: a | 252.070 16:48:16.8 |
| Dec: a | -36.015 -36:00:54.0 |
| 90% Error Radius: b | 2.1 |
| T90: c | 80 |
| Fluence: d | 7.1 (0.9) |
| 1s Peak Photon Flux: e | 1.25 (0.1) |
| Photon Index: f | 1.51, 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 | n/a |
| Dec: a | n/a |
| 90% Error Radius: b | n/a |
| Time to First Observation: c | 3154.94 |
| Early Flux: d | 0.111 |
| 11 Hour Flux: d | 0.004981905 |
| 24 Hour Flux: d | 0.00228332 |
| Initial Temporal Index: | n/a |
| Spectral Index (Gamma): | 2.47968 |
| Column Density (NH): e | 14.3818 |
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 | 3849 |
| V Magnitude: | V>19.08 |
| Other Filter Magnitudes: | B>20.06 U>19.74 UVW1>19.65 UVM2>19.32 UVW2>19.61 White>20.52 |
a J2000; b arcsec; c seconds
Other Burst Info:
Redshift:Host Galaxy:
Other Observatory Detections:
Comments:
Due to an observing constraint, Swift did not slew until T0+50.1 minutes.
UVOT: no detection
References:
BAT: GCN 9461; GCN 9465; GCN 9475
XRT: GCN 9463; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 9464; GCN 9469; GCN 9471
Radio:
Redshift:
Host:
Other: