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GRB 210421A

Time: 00:27:30
Trigger Number: 1044426
Burst Advocate: Mike Moss

BAT Data:

RA: a 104.882
06:59:31.7
Dec: a 4.928
04:55:40.8
90% Error Radius: b 1.2
T90: c 79.52
Fluence: d 20 (2)
1s Peak Photon Flux: e 2.0 (0.3)
Photon Index: f 1.10, CPL (0.72)

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 06:59:29.86
Dec: a 04:55:20.0
90% Error Radius: b 2.1
Time to First Observation: c 87.81
Early Flux: d 1510
11 Hour Flux: d 0.052282002
24 Hour Flux: d 0.0295894896
Initial Temporal Index: -2.566
Spectral Index (Gamma): 2.17119
Column Density (NH): e 4.6287300826473

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 96
V Magnitude: V>17.9
Other Filter Magnitudes: B>19.2
U>19.6
UVW1>18.1
UVM2>17.9
UVW2>18.3
White>20.6

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
Host Galaxy:
Other Observatory Detections:
GECAM-B

Comments:

UVOT: no detection

References:

BAT: GCN 29849; GCN 29893
XRT: GCN 29849; GCN 29865; GCN 29875; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29849; GCN 29885
Radio:
Redshift:
Host:
Other: