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GRB 250101A

Time: 13:22:50
Trigger Number: 1278305
Burst Advocate: Kim Page

BAT Data:

RA: a 37.057
02:28:13.7
Dec: a 19.181
19:10:51.6
90% Error Radius: b 1.9
T90: c 34.19
Fluence: d 6.3 (1.0)
1s Peak Photon Flux: e 0.8 (0.2)
Photon Index: f 2.12, PL (0.24)

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 02:28:16.52
Dec: a 19:11:40.0
90% Error Radius: b 2.1
Time to First Observation: c 127.42
Early Flux: d n/a
11 Hour Flux: d 0.120893475
24 Hour Flux: d 0.012393405
Initial Temporal Index: -0.703
Spectral Index (Gamma): 2.038650607
Column Density (NH): e 17.39859044

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 02:28:16.47
Dec: a 19:11:39.6
90% Error Radius: b 0.43
Time to First Observation: c 133
V Magnitude: V=18.10
Other Filter Magnitudes: B=18.66
U=17.93
UVW1>19.8
UVM2>19.1
UVW2>18.9
White=18.03

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
2.49 (Xinglong: absorption)
2.481 (GMG: absorption)
Host Galaxy:
Other Observatory Detections:
GMG (2.4m), GIT (0.7m), Nanshan/HMT (0.5m), MASTER, SVOM/C-GFT, Xinglong (2.16m), SAO RAS (1m), AKO (0.36m), BOOTES-4/MET, OASDG (0.5m), LCOGT (40cm), Montarrenti Observatory (0.53m), Mephisto (1.6m), NUTTelA-TAO/BSTI, LCOGT (1m), Liverpool (2m), DFOT (1.3m), NUTTelA-TAO, REM (60cm), Terskol K-800 (0.8m), CMO RC-500 (0.5m), Terskol Zeiss-2000 (2m), Calapai Observatory (11")

Comments:

References:

BAT: GCN 38752; GCN 38782
XRT: GCN 38752; GCN 38761; GCN 38773; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 38752; GCN 38775
Radio:
Redshift: GCN 38759 (Xinglong); GCN 38776 (GMG)
Host:
Other: