[vsnet-grb-info 4788] Swift Trigger 282176 is Cygnus X-1
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Wed Jun 13 20:34:10 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 6527
SUBJECT: Swift Trigger 282176 is Cygnus X-1
DATE: 07/06/13 11:33:54 GMT
FROM: David Palmer at LANL <palmer at lanl.gov>
L. Vetere (PSU), S. D. Barthelmy (GSFC), D. Grupe (PSU),
J. A. Kennea (PSU), D. M. Palmer (LANL),
P. Romano (Univ. Bicocca & INAF-OAB) and
R. L. C. Starling (U Leicester) report on behalf of the Swift Team:
BAT trigger 282176 (2007-06-13 11:13:41 UT) was not a GRB.
Instead, it is the remnant of the Cyg X-1 peak after
bright source peak removal in the image (cleaning).
This is an instrumental and statistical artifact, and does
not indicate an interesting variation in the Cyg X-1 flux.
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