GCN Circular 18716
Subject
Trigger 668097: Swift detection of V 404 Cyg
Date
2015-12-23T05:35:49Z (9 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@milkyway.gsfc.nasa.gov>
S. D. Barthelmy (GSFC), K. L. Page (U Leicester) and
D. M. Palmer (LANL) report on behalf of the Swift Team:
At 05:19:52 UT, the Swift Burst Alert Telescope (BAT) triggered and
located V 404 Cyg (trigger=668097). Swift did not slew due to a low merit value.
The BAT on-board calculated location is
RA, Dec 306.024, +33.874, which is
RA(J2000) = 20h 24m 06s
Dec(J2000) = +33d 52' 27"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). As is typical with image triggers, the real-time
light curve does not show anything.
This is a known source, and as such the assigned merit value was low enough
to not allow an immediate slew. Swift will slew to this source at 06:37 UT.