TITLE: GCN CIRCULAR NUMBER: 8199 SUBJECT: Swift Trigger 324112 is known source Swift J1842.5-1124 DATE: 08/09/08 06:14:34 GMT FROM: David Palmer at LANL J. L. Racusin (PSU), P. A. Evans (U Leicester), D. Grupe (PSU), E. A. Hoversten (PSU), H. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (CRESST/GSFC/UMD), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), M. Stamatikos (NASA/ORAU), M. C. Stroh (PSU) and L. Vetere (PSU) report on behalf of the Swift Team: At 05:37:16 UT, the Swift Burst Alert Telescope (BAT) triggered and located an excess (trigger=324112). Swift slewed immediately to the position. The BAT on-board calculated location is RA, Dec 280.549, -11.450 which is RA(J2000) = 18h 42m 12s Dec(J2000) = -11d 27' 00" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). This position is consistent with the known transient SWIFT J1842.5-1124 (Krimm et al. ATEL #1610). The XRT position is consistent with the previously reported position to within 4.6 arcsec. Thus, this trigger is the known source and not a GRB. Burst Advocate for this burst is J. L. Racusin (racusin AT astro.psu.edu). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)