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GRB 160821B

Measurement Value Units
Swift Trigger Time Aug. 21, 2016, 5:29 p.m. UT Modify
Swift Trigger Number 709357 None Modify
BAT RA (J2000) 280.005 deg Modify
BAT Dec (J2000) 62.387 deg Modify
BAT 90% Error Radius 1.4 arcmin Modify
BAT T90 0.48 sec Modify
BAT Fluence (15-150 keV) 1.0 10^-7 erg/cm^2 Modify
XRT Time to First Observation 65.97 sec Modify
UVOT Time to First Observation 76.0 sec Modify
UVOT Magnitude V>19.1 None Modify
UVOT Other Filter Magnitudes B>20.2|U>20.6|UVW1>19.6|UVM2>19.5|UVW2>20.1|White>21.7 None Modify
Swift Comments UVOT: no detection None Modify
Swift Burst Advocate Mike Siegel None Modify
XRT RA (J2000) 279.976208333 deg Modify
XRT Dec (J2000) 62.3914444444 deg Modify
XRT 90% Error Radius 2.2 arcsec Modify
XRT Initial Temporal Index -2.444 None Modify
XRT Spectral Index (Gamma) 2.39723 None Modify
XRT Column Density (NH) 0.575275000021 10^21 cm^-2 Modify
BAT 1-sec Peak Photon Flux (15-150 keV) 1.7 ph/cm^2/sec Modify
XRT 11 Hour Flux (0.3-10 keV) 1.3792185e-05 10^-11 erg/cm^2/s Modify
XRT 24 Hour Flux (0.3-10 keV) 2.0496432e-06 10^-11 erg/cm^2/s Modify
Other Observatory Detections NOT (2.56m), Fermi (GBM), WHT, GTC (10.4m), VLA @ 5.0 GHz None Modify
XRT Early Flux (0.3-10 keV) 145.0 10^-11 erg/cm^2/s Modify
BAT Photon Index (15-150 keV) (CPL = cutoff power-law) 0.11 None Modify

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