[vsnet-grb-info 20859] Trigger 848584: Swift detection of AX 1631.9-4752

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22957
SUBJECT: Trigger 848584: Swift detection of AX 1631.9-4752
DATE:    18/07/18 14:38:42 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <scott at milkyway.gsfc.nasa.gov>

S. D. Barthelmy (GSFC), S. W. K Emery (UCL-MSSL), J.D. Gropp (PSU),
J. A. Kennea (PSU), A. Y. Lien (GSFC/UMBC),
M. J. Moss (George Washington University), D. M. Palmer (LANL),
P. Romano (INAF-OAB) and A. Tohuvavohu (PSU) report on behalf of the
Neil Gehrels Swift Observatory Team:

At 14:04:34 UT, the Swift Burst Alert Telescope (BAT) triggered and
located AX 1631.9-4752 (trigger=848584).  Swift did not slew. 
The BAT on-board calculated location is 
RA, Dec 248.070, -47.809, which is 
   RA(J2000)  =  16h 32m 17s
   Dec(J2000) = -47d 48' 33"
with an uncertainty of 3 arcmin (radius, 90% containment, including 
systematic uncertainty).  As is typical for image triggers, the real-time 
light curve does not show anything significant. 

BAT is currently configured to alert on this SFXT (Supergiant Fast 
X-ray Transient), but give it a low merit value so that it will 
not automatically slew.  However, a ToO observation is planned 
for ~T+3 hours.