GCN Circular 12392
Subject
Swift-BAT trigger 503926 is noise
Date
2011-09-24T16:05:45Z (13 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
S. D. Barthelmy (GSFC), D. Burrows (PSU), J. R. Cummings (GSFC/UMBC),
E. A. Hoversten (PSU), H. A. Krimm (GSFC/USRA), S. Oates (UCL-MSSL),
C Pagani (UL)
(for the Swift team):
Using the BAT data set from T-239 to T+963 sec from recent telemetry downlinks,
we report further analysis of Swift-BAT trigger #503926 (Hoversten, et al.,
GCN Circ. 12391). This trigger is due to chance coincidence
of noise fluctuations in the rate and image domains.
XRT observations in Photon Counting mode data started 126 s after the�
BAT trigger. In 2ks of PC data no source is detected inside the BAT
error circle.� The three sigma upper limit is 4e-3 counts/second.
This trigger is a noise event, and is not anything astrophysical.