TITLE: GCN CIRCULAR NUMBER: 19707 SUBJECT: Swift-BAT trigger 704327 was due to noise DATE: 16/07/14 16:20:15 GMT FROM: Scott Barthelmy at NASA/GSFC T. Sakamoto (AGU), S. D. Barthelmy (GSFC), A, Breeveld (UCL-MSSL), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU), M. Stamatikos (OSU), B. Sbarufatti ((INAF-OAB/PSU)), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team): Using the full BAT data set from T-240 to T+962 sec from recent telemetry downlinks, we report that trigger #704327 was due to a noise fluctuation in the image domain. The BAT ground analysis shows the image significance has dropped to 3.2 sigma. No obvious emission is seen in the mask-weighted light curve. We have analyzed 607 s of XRT data, from T+116 s to T+723 s. No source is detected inside the BAT error circle, down to a 3-sigma upper limit of 2.7E-2 counts/s. The Swift/UVOT began settled observations of the field 113 s after the BAT trigger. No optical afterglow consistent with the BAT position is detected in the initial UVOT exposures. Therefore, we believe this trigger is due to a noise fluctuation.