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GRB 170331A

Measurement Value Units
Swift Trigger Time March 30, 2017, 8:40 p.m. UT Modify
Swift Trigger Number 744791 None Modify
BAT RA (J2000) 323.778 deg Modify
BAT Dec (J2000) -24.406 deg Modify
BAT 90% Error Radius 2.0 arcmin Modify
BAT T90 17.57 sec Modify
BAT Fluence (15-150 keV) 9.7 10^-7 erg/cm^2 Modify
XRT Time to First Observation 124.2 sec Modify
UVOT Time to First Observation 128.0 sec Modify
UVOT Magnitude V>18.5 None Modify
UVOT Other Filter Magnitudes B>19.1|U>19.7|UVW1>19.1|UVM2>19.4|White>21.0 None Modify
Swift Comments UVOT: no detection None Modify
Swift Burst Advocate Andrea Melandri None Modify
XRT RA (J2000) 323.791958333 deg Modify
XRT Dec (J2000) -24.3863611111 deg Modify
XRT 90% Error Radius 1.5 arcsec Modify
XRT Initial Temporal Index -0.9627 None Modify
XRT Spectral Index (Gamma) 2.48426 None Modify
XRT Column Density (NH) 5.555436 10^21 cm^-2 Modify
BAT 1-sec Peak Photon Flux (15-150 keV) 1.2 ph/cm^2/sec Modify
XRT 11 Hour Flux (0.3-10 keV) 0.0091872285 10^-11 erg/cm^2/s Modify
XRT 24 Hour Flux (0.3-10 keV) 0.0043352679 10^-11 erg/cm^2/s Modify
BAT Photon Index (15-150 keV) (CPL = cutoff power-law) 0.37 None Modify

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