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GRB 250520A

Time: 02:42:16.84
Trigger Number: 1315630
Burst Advocate: Rob Eyles-Ferris

BAT Data:

RA: a 282.265
18:49:03.6
Dec: a -11.852
-11:51:07.2
90% Error Radius: b 1.6
T90: c 0.46
Fluence: d 1.8 (0.2)
1s Peak Photon Flux: e 1.9 (0.2)
Photon Index: f 0.55, PL (0.23)

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 18:49:08.58
Dec: a -11:52:08.9
90% Error Radius: b 2.3
Time to First Observation: c 144.05
Early Flux: d n/a
11 Hour Flux: d 0.0000407132176
24 Hour Flux: d 0.00000676172
Initial Temporal Index: -2.301
Spectral Index (Gamma): 2.187214646
Column Density (NH): e 13.71488488

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 127
V Magnitude: V>18.9
Other Filter Magnitudes: B>19.7
U>19.3
UVW1>19.1
UVM2>18.6
UVW2>19.2
White>20.9

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
Host Galaxy:
Other Observatory Detections:
SVOM/GRM, AstroSat CZTI, Konus-Wind, VLA @ 10 GHz, CALET (GBM), GRBAlpha, MeerKAT @ 3 GHz, Gemini-South

Comments:

UVOT: no detection

References:

BAT: GCN 40491; GCN 40565
XRT: GCN 40491; GCN 40492; GCN 40494; GCN 40503; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 40491; GCN 40509
Radio: GCN 40518 (VLA); GCN 40545 (VLA); GCN 40546 (MeerKAT)
Redshift:
Host:
Other: