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GRB 240825A

Time: 15:52:59
Trigger Number: 1250617
Burst Advocate: Rahul Gupta

BAT Data:

RA: a 344.570
22:58:16.8
Dec: a 1.019
01:01:08.4
90% Error Radius: b 1.0
T90: c 57.20
Fluence: d 250 (4)
1s Peak Photon Flux: e 100.0 (1.7)
Photon Index: f 1.20, PL (0.03)

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 22:58:17.16
Dec: a 01:01:35.0
90% Error Radius: b 1.9
Time to First Observation: c 83.11
Early Flux: d 3240
11 Hour Flux: d 1.0281098
24 Hour Flux: d 0.376897584
Initial Temporal Index: -3.002
Spectral Index (Gamma): 1.781071778
Column Density (NH): e 8.713941673

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 22:58:17.26
Dec: a 01:01:36.9
90% Error Radius: b 0.42
Time to First Observation: c 93
V Magnitude: V=17.02
Other Filter Magnitudes: B=17.54
U=16.93
UVW1=18.55
White=15.58

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
0.659 (VLT: absorption & emission)
~0.66 (TNG: absorption)
Host Galaxy:
Other Observatory Detections:
Fermi (GBM & LAT), Nanshan/HMT (0.5m), PROMPT-MO, AKO (0.36m), Mephisto (1.6m), GMG (2.4m), LCO (1m), MASTER-SAAO, Montarrenti Observatory (0.53m), SVOM/C-GFT (1.2m), VLT, REM (60cm), AstroSat CZTI, MISTRAL/T193 OHP (193cm), PRIME (1.8m), Konus-Wind, KAIT (0.76m), TNG (3.6m), SAO RAS (1m), ALMA @ 97.5 GHz, GECAM-B, VLA @ 8.6 GHz, iTelescope (T73, 0.356m), SVOM/VT, MeerKAT @ (1.3 and 3 GHz), MeerLICHT (0.6m), ATCA, SVOM/VT, INTEGRAL

Comments:

References:

BAT: GCN 37274; GCN 37355
XRT: GCN 37274; GCN 37290; GCN 37294; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 37274; GCN 37296
Radio: GCN 37314 (ALMA); GCN 37322 (VLA); GCN 37353 (MeerKAT); GCN 37388 (ATCA)
Redshift: GCN 37293 (VLT); GCN 37310 (TNG)
Host:
Other: