{
  "bibcode": "2015GCN.18025....1B",
  "body": "S. D. Barthelmy (GSFC), J. A. Kennea (PSU), P. Romano (INAF-IASFPA)\nand B. Sbarufatti (INAF-OAB/PSU) report on behalf of the Swift Team:\n\nAt 01:54:25 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated AX J1619.4-4945 (trigger=649143).  Swift's slew was delayed\nby an SAA transit and lack of observability. \nThe BAT on-board calculated location is \nRA, Dec 244.970, -49.810 which is \n   RA(J2000)  =  16h 19m 53s\n   Dec(J2000) = -49d 48' 35\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including \nsystematic uncertainty).  As is typical with image triggers,\nthere is nothing significant in the real-time light curve. \n\nAlthough we believe that this is probably the HMXB source\nAX J1619.4-4945, the marginal significance (6.46 sigma)\nand distance from the catalog position (5 arcminutes)\nleave some room for doubt.  Confirmation of this detection\nwill require the full downlinked dataset and follow-up\nobservations by XRT.",
  "circularId": 18025,
  "createdOn": 1437014441000,
  "email": "palmer@lanl.gov",
  "subject": "Trigger 649143: Swift detection of AX J1619.4-4945",
  "submitter": "David Palmer at LANL  <palmer@lanl.gov>"
}