TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1190 SUBJECT: GRB011130 (=XRF011130): Further analysis of Chandra Target of DATE: 01/12/12 06:31:30 GMT FROM: George Ricker at MIT GRB011130 (=XRF011130): Further analysis of Chandra Target of Opportunity Observations G. Monnelly, N. Butler, G. Ricker, P. Ford, R. Vanderspek (MIT); and D. Lamb (U.Chicago) on behalf of the Chandra ToO Team and the HETE Science Team write: On 10 December, from 00:38 UT - 09:27 UT, the Chandra Observatory targeted the field of the X-ray rich gamma-ray burst XRF011130 that was previously localized by the HETE satellite (Ricker et al., GCN 1165). The revised error circle for XRF011130 (Ricker et al. GCN 1178) fits completely within the field-of-view of the ACIS-I array on Chandra. The observation duration was 30 ksec. In Ricker et al. (GCN 1185), we reported the locations of the brightest 10 X-ray sources established in our Chandra observation. In this Circular, we complete the list of detected sources by presenting all sources found in the entire ACIS-I detector field-of-view down to a limit of 10 detected counts, including the sources presented in GCN Circular #1185. The information for sources outside the 7.6' radius HETE error circle are presented in a separate table for clarity. The analysis reported here is based on wavedetect, whereas GCN 1185 was based on celldetect. The results are similar: nine of the celldetect sources appear among the top ten wavedetect sources. The following table includes all sources above a limit of 10 detected counts found within the HETE error circle (radius 7.6'). Sources marked with a * were found by celldetect and distributed in GCN 1185. Chandra Source ID RA DEC dRA(s) dDEC('') Cts * CXOU J030527.7+034656 3 5 27.70 3 46 56.46 0.057 1.18 128 * CXOU J030532.3+035139 3 5 32.32 3 51 39.79 0.057 1.18 105 * CXOU J030534.1+034958 3 5 34.08 3 49 58.35 0.057 1.18 37 * CXOU J030514.0+034853 3 5 14.03 3 48 53.56 0.057 1.19 32 * CXOU J030458.5+034702 3 4 58.46 3 47 2.31 0.067 1.28 31 * CXOU J030549.9+035008 3 5 49.88 3 50 8.80 0.058 1.20 28 * CXOU J030541.2+034807 3 5 41.25 3 48 7.26 0.057 1.19 23 * CXOU J030534.1+034208 3 5 34.07 3 42 8.24 0.062 1.33 22 * CXOU J030535.8+035302 3 5 35.83 3 53 2.99 0.058 1.19 20 CXOU J030534.7+035147 3 5 34.68 3 51 47.96 0.057 1.19 18 CXOU J030502.4+034522 3 5 2.44 3 45 22.41 0.071 1.30 18 CXOU J030532.4+034301 3 5 32.44 3 43 1.87 0.062 1.29 17 CXOU J030540.5+034936 3 5 40.45 3 49 36.96 0.057 1.19 15 CXOU J030516.5+035229 3 5 16.48 3 52 29.34 0.059 1.19 14 CXOU J030522.2+035354 3 5 22.21 3 53 54.43 0.059 1.19 14 * CXOU J030512.8+034936 3 5 12.75 3 49 36.22 0.057 1.19 12 CXOU J030530.3+035224 3 5 30.31 3 52 24.48 0.057 1.18 11 CXOU J030532.9+034927 3 5 32.86 3 49 27.94 0.057 1.19 11 CXOU J030537.0+034406 3 5 37.04 3 44 6.95 0.059 1.25 10 CXOU J030501.6+034613 3 5 1.65 3 46 13.94 0.061 1.24 10 The following table includes all sources above a limit of 10 detected counts found in the ACIS-I field-of-view outside the HETE error circle (radius 7.6'), but within 10' of the center of the HETE error circle. Chandra Source ID RA DEC dRA(s) dDEC('') Cts CXOU J030539.8+034148 3 5 39.79 3 41 48.82 0.060 1.23 132 CXOU J030454.4+035149 3 4 54.39 3 51 49.41 0.066 1.25 52 CXOU J030519.7+035711 3 5 19.67 3 57 11.99 0.062 1.21 50 CXOU J030539.1+035652 3 5 39.09 3 56 52.21 0.063 1.21 42 CXOU J030529.8+035711 3 5 29.79 3 57 11.93 0.063 1.21 36 CXOU J030537.4+035744 3 5 37.41 3 57 44.79 0.065 1.22 32 CXOU J030538.3+035825 3 5 38.28 3 58 25.95 0.067 1.26 24 CXOU J030453.0+035144 3 4 53.04 3 51 44.28 0.070 1.25 16 CXOU J030602.8+034737 3 6 2.77 3 47 37.64 0.074 1.39 16 CXOU J030529.0+034115 3 5 29.02 3 41 15.90 0.065 1.38 11 The astrometry was calibrated using five USNO A2 catalog stars. In the table, delta(RA), the uncertainty in RA, and delta(DEC),the uncertainty in DEC, were established by summing the following in quadrature for each coordinate: the error reported by wavedetect, the error reported by the correlation code, and the error estimate from the star reference catalog. It is notable that during our Chandra observation there were no counts detected from within the error circle of the VLA radio source reported by Berger and Frail (GCN 1173). Further information about the Chandra observations, including 23 additional sources down to the detection limit of the observation, can be found on the HETE web page: http://space.mit.edu/HETE/Bursts/GRB011130. This message may be cited.