TITLE: GCN CIRCULAR NUMBER: 12334 SUBJECT: GRB 110825A: Further Swift/XRT Observations DATE: 11/09/12 20:59:08 GMT FROM: Binbin Zhang at PSU B.-B. Zhang (PSU), D. Grupe (PSU), D. N. Burrows (PSU), J. Gelbord (PSU) and S. D. Barthelmy (GSFC) report on behalf of the Swift-XRT team: We report further observations of the possible X-ray counterpart (Zhang & Grupe, GCN 12308) of the IPN-detected burst GRB 110825A (Hurley etal., GCN 12307). The Swift/XRT found a relatively bright X-ray source located at RA (J2000): 02 59 11.63 Dec(J2000): +15 25 38.4. We performed follow-up XRT observations of this field at T0+1 day, T0+5 days,T0+12 days and T0+16 days (where T0 = 2011 Aug 25 at 02:26:48.0 UT ), in order to determine whether or not the X-ray source had faded. The observed count rates in the 0.3-10 keV band are as follows : T-T0 Count Rate (8.7+/-0.6)x10^3 s 0.0129+/-0.0025 count/s (4.8+/-0.2)x10^5 s 0.0045+/-0.0011 count/s (1.1+/-0.01)x10^6 s 0.0065+/-0.0025 count/s (1.4+/-0.07)x10^6 s 0.0083+/-0.0018 count/s We find that this source is now at a count rate consistent with that of our first observation on T0+1 day at the 1.5 sigma level. The chance probability for the source being steady is about 0.015, indicating that it is variable, but it is not decaying as expected for a GRB. We conclude that this source is not the afterglow of GRB 110825A. Thus, no afterglow was detected by XRT for this burst. We note that the variability of this X-ray counterpart in the last two weeks suggests that it may be a background AGN. The updated results of the XRT-team automatic analysis are available at .