[vsnet-grb-info 6999] Swift Trigger 335971 is probably not a real source

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8583
SUBJECT: Swift Trigger 335971 is probably not a real source
DATE:    08/11/30 17:15:12 GMT
FROM:    Jay R. Cummings at NASA/GSFC/Swift  <jayc at milkyway.gsfc.nasa.gov>

J. Cummings (NASA/GSFC/UMBC), J. Mao (INAF-OAB)
on behalf of the Swift science team.

Ground analysis of BAT event data from trigger 335971 shows a weak
image peak and a weak excess in the light curve on the interval T0
to T+60 sec, 15-50 kev. We cannot confirm nor completely rule out a
legitimate source. The best ground-derived position is
RA, Dec 324.330, +21.498, which is

    RA(J2000) = 21h 37m 19.2s
    Dec(J2000) = +21d 30' 51"

with an uncertainty radius of 3 arcmin (90% confidence, stat+sys).

XRT data show no sources within the BAT error circle.