TITLE: GCN CIRCULAR NUMBER: 8267 SUBJECT: GRB080913: Swift-BAT spectral lag DATE: 08/09/18 14:15:23 GMT FROM: Dong Xu at DARK,NBI Dong Xu (DARK/NBI) reports The Swift/BAT data were reduced in a standard way. Making use of the Cross Correlation Function (CCF) for different energy bands over 15-150 keV, we found negligible spectral time lags, being consistent with the values/range of previous Swift short-duration GRBs. Also we note the rest-frame energy band which BAT corresponds to for this burst (z~6.7, Fynbo et al. GCN 8225) is higher than that for previous GRBs. DX is grateful to R. L. C. Starling, P. T. O'Brien, and K. Page through the SPARTAN program on Swift data reduction.