TITLE:   GCN CIRCULAR
NUMBER:  23072
SUBJECT: GRB 180727A: Swift/BAT spectral lag result
DATE:    18/08/03 04:01:20 GMT
FROM:    Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>

J. P. Norris (BSU), Y. Kawakubo (AGU),
T. Sakamoto (AGU), S. D. Barthelmy (GSFC),
S. B. Cenko (GSFC), A. Y. Lien (GSFC/UMBC)

We report the spectral lag analysis for GRB 180727A
(Beardmore et al., GCN Circ. 23043; Lien et al., GCN Circ. 23047)
based on the BAT data.  The lag analysis finds a lag of 80 +- 27 ms
for the 50-100 keV to 15-25 keV band.  Despite the short T90 duration
(1.1 +- 0.2 s), the lag value is consistent with that of long GRBs.