GCN Circular 12302
Ersin Gogus (Sabanci Univ. Istanbul), Chryssa Kouveliotou (NASA/MSFC), Oleg Kargaltsev (FSU), George Pavlov (PSU) report on behalf of a larger collaboration: Swift J1834.9-0846 (D'Elia et al. GCN Circ. 12253, Guiriec et al. 12255) was observed with Chandra/ACIS-S on 2011 August 22 for a 13 ks net exposure time. The timing analysis of the barycentered data in the 0.5-8 keV range clearly reveal the coherent signal at 0.40285032 Hz that is consistent with our earlier report (Gogus et al. ATel 2542) and confirms it as the spin frequency of the new source. We also obtained the accurate X-ray position of the source using wavdetect utility of CIAO 4.4 as RA=18 34 52.12, Dec=-08 45 55.97 with 0.60" positional uncertainty (90% containment).