S. D. Barthelmy (GSFC), V. D'Elia (ASDC), L. Izzo (URoma/ICRA),
J. A. Kennea (PSU), A. Y. Lien (GSFC/UMBC),
C. B. Markwardt (NASA/GSFC), K. L. Page (U Leicester) and
M. H. Siegel (PSU) report on behalf of the Swift Team:
At 17:17:58 UT, the Swift Burst Alert Telescope (BAT) triggered and
located V 404 Cyg (trigger=668949). Swift did not slew because of a higher
merit value target already being observed. The BAT on-board calculated location
is RA, Dec 305.996, +33.859, which is
RA(J2000) = 20h 23m 59s
Dec(J2000) = +33d 51' 34"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve shows several peaks
with a total duration of about 40 sec. The peak count rate
was ~1100 counts/sec (15-350 keV), at ~0 sec after the trigger.