TITLE:   GCN CIRCULAR
NUMBER:  8378
SUBJECT: Swift detection of flare on CC Eri
DATE:    08/10/16 11:40:50 GMT
FROM:    David Palmer at LANL  <palmer@lanl.gov>

P. A. Evans (U Leicester), A. P. Beardmore (U Leicester),
S. Campana (INAF-OAB), P.A. Curran (MSSL-UCL),
N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC),
H. A. Krimm (CRESST/GSFC/USRA), W.B Landsman (GSFC),
J. Mao (INAF-OAB), F. E. Marshall (NASA/GSFC),
P. T. O'Brien (U Leicester), J. P. Osborne (U Leicester),
K. L. Page (U Leicester), D. M. Palmer (LANL),
P. Romano (INAF-IASFPA), R. L. C. Starling (U Leicester),
E. Troja (INAF-IASFPA) and T. N. Ukwatta (GSFC/GWU) report on behalf
of the Swift Team:

At 11:22:52 UT, the Swift Burst Alert Telescope (BAT) triggered and
located a flare from a position consistent with V* CC Eri (trigger=331821). 
Swift slewed immediately to the location. The BAT on-board calculated 
location is RA, Dec 38.602, -43.797 which is 
   RA(J2000) = 02h 34m 25s
   Dec(J2000) = -43d 47' 47"
with an uncertainty of 3 arcmin (radius, 90% containment, including 
systematic uncertainty).  As is usual with image triggers, the promptly
available BAT light curve does not show significant structure. 

The XRT began observing the field at 11:25:20.0 UT, 147.2 seconds after
the BAT trigger. XRT found a bright X-ray source located at RA, Dec
38.5904, -43.7971 which is equivalent to:
   RA(J2000)  = 02h 34m 21.69s
   Dec(J2000) = -43d 47' 49.5"
with an uncertainty of 5.5 arcseconds (radius, 90% containment). This
location is 30 arcseconds from the BAT onboard position, within the BAT
error circle. This position is consistent with the catalogued position of 
2RXP J023422.2-434751 = CC Eri.