GRB 210420B

Time: 18:34:37
Trigger Number: 1044382
Burst Advocate: Mike Moss

BAT Data:

RA: a 254.313
Dec: a 42.558
90% Error Radius: b 2.1
T90: c 158.8
Fluence: d 15 (2)
1s Peak Photon Flux: e 0.5 (0.2)
Photon Index: f 1.49, PL (0.19)

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 16:57:17.90
Dec: a 42:34:12.7
90% Error Radius: b 3.1
Time to First Observation: c 141
Early Flux: d n/a
11 Hour Flux: d 0.046090104
24 Hour Flux: d 0.0175530486
Initial Temporal Index: -2.174
Spectral Index (Gamma): 1.61234
Column Density (NH): e 0.0000000623475

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 147
V Magnitude: V=16.7
Other Filter Magnitudes: U=18.6

a J2000; b arcsec; c seconds

Other Burst Info:

1.400 (GTC: absorption)
Host Galaxy:
Other Observatory Detections:
MASTER-Kislovodsk, Hankasalmi (0.40m), BOOTES-4/MET (0.6m), YaoAn (AST3-3), Montarrenti (0.53m), NOT (2.5m), GTC (10.4m), DDOTI, KAIT (0.76m), Tautenburg (1.34m), HJT (1.5m), Ondrejov D50, Konkoly RC80 (0.8m), Koshka Zeiss-1000, INASAN/Simeiz (1m), Assy-Turgen (AZT-20)



BAT: GCN 29844; GCN 29854; GCN 29879
XRT: GCN 29844; GCN 29876; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 29844; GCN 29862
Redshift: GCN 29853 (GTC)