{
  "bibcode": "2001GCN..1190....1M",
  "body": "GRB011130 (=XRF011130): Further analysis of Chandra Target of\nOpportunity Observations\n\nG. Monnelly, N. Butler, G. Ricker, P. Ford, R. Vanderspek (MIT); and\nD. Lamb (U.Chicago)\n\non behalf of the Chandra ToO Team and the HETE Science Team\n\nwrite:\n\nOn 10 December, from 00:38 UT - 09:27 UT, the Chandra Observatory \ntargeted the field of the X-ray rich gamma-ray burst XRF011130 that \nwas previously localized by the HETE satellite (Ricker et al., GCN \n1165). The revised error circle for XRF011130 (Ricker et al. GCN \n1178) fits completely within the field-of-view of the ACIS-I array on \nChandra.  The observation duration was 30 ksec.\n\nIn Ricker et al. (GCN 1185), we reported the locations of the \nbrightest 10 X-ray sources established in our Chandra observation. \nIn this Circular, we complete the list of detected sources by \npresenting all sources found in the entire ACIS-I detector \nfield-of-view down to a limit of 10 detected counts, including the \nsources presented in GCN Circular #1185.  The information for sources \noutside the 7.6' radius HETE error circle are presented in a separate \ntable for clarity.  The analysis reported here is based on \nwavedetect, whereas GCN 1185 was based on celldetect.  The results \nare similar: nine of the celldetect sources appear among the top ten \nwavedetect sources.\n\nThe following table includes all sources above a limit of 10 detected \ncounts found within the HETE error circle (radius 7.6').  Sources \nmarked with a * were found by celldetect and distributed in GCN 1185.\n\n       Chandra Source ID       RA         DEC      dRA(s) dDEC('') Cts\n   * CXOU J030527.7+034656  3 5 27.70  3 46 56.46  0.057    1.18   128\n   * CXOU J030532.3+035139  3 5 32.32  3 51 39.79  0.057    1.18   105\n   * CXOU J030534.1+034958  3 5 34.08  3 49 58.35  0.057    1.18    37\n   * CXOU J030514.0+034853  3 5 14.03  3 48 53.56  0.057    1.19    32\n   * CXOU J030458.5+034702  3 4 58.46  3 47  2.31  0.067    1.28    31\n   * CXOU J030549.9+035008  3 5 49.88  3 50  8.80  0.058    1.20    28\n   * CXOU J030541.2+034807  3 5 41.25  3 48  7.26  0.057    1.19    23\n   * CXOU J030534.1+034208  3 5 34.07  3 42  8.24  0.062    1.33    22\n   * CXOU J030535.8+035302  3 5 35.83  3 53  2.99  0.058    1.19    20\n     CXOU J030534.7+035147  3 5 34.68  3 51 47.96  0.057    1.19    18\n\n     CXOU J030502.4+034522  3 5  2.44  3 45 22.41  0.071    1.30    18\n     CXOU J030532.4+034301  3 5 32.44  3 43  1.87  0.062    1.29    17\n     CXOU J030540.5+034936  3 5 40.45  3 49 36.96  0.057    1.19    15\n     CXOU J030516.5+035229  3 5 16.48  3 52 29.34  0.059    1.19    14\n     CXOU J030522.2+035354  3 5 22.21  3 53 54.43  0.059    1.19    14\n   * CXOU J030512.8+034936  3 5 12.75  3 49 36.22  0.057    1.19    12\n     CXOU J030530.3+035224  3 5 30.31  3 52 24.48  0.057    1.18    11\n     CXOU J030532.9+034927  3 5 32.86  3 49 27.94  0.057    1.19    11\n     CXOU J030537.0+034406  3 5 37.04  3 44  6.95  0.059    1.25    10\n     CXOU J030501.6+034613  3 5  1.65  3 46 13.94  0.061    1.24    10\n\nThe following table includes all sources above a limit of 10 detected \ncounts found in the ACIS-I field-of-view outside the HETE error \ncircle (radius 7.6'), but within 10' of the center of the HETE error \ncircle.\n\n       Chandra Source ID       RA         DEC      dRA(s) dDEC('') Cts\n     CXOU J030539.8+034148  3 5 39.79  3 41 48.82  0.060    1.23   132\n     CXOU J030454.4+035149  3 4 54.39  3 51 49.41  0.066    1.25    52\n     CXOU J030519.7+035711  3 5 19.67  3 57 11.99  0.062    1.21    50\n     CXOU J030539.1+035652  3 5 39.09  3 56 52.21  0.063    1.21    42\n     CXOU J030529.8+035711  3 5 29.79  3 57 11.93  0.063    1.21    36\n     CXOU J030537.4+035744  3 5 37.41  3 57 44.79  0.065    1.22    32\n     CXOU J030538.3+035825  3 5 38.28  3 58 25.95  0.067    1.26    24\n     CXOU J030453.0+035144  3 4 53.04  3 51 44.28  0.070    1.25    16\n     CXOU J030602.8+034737  3 6  2.77  3 47 37.64  0.074    1.39    16\n     CXOU J030529.0+034115  3 5 29.02  3 41 15.90  0.065    1.38    11\n\nThe astrometry was calibrated using five USNO A2 catalog stars.\n\nIn the table, delta(RA), the uncertainty in RA, and delta(DEC),the \nuncertainty in DEC, were established by summing the following in \nquadrature for each coordinate: the error reported by wavedetect, the \nerror reported by the correlation code, and the error estimate from \nthe star reference catalog.\n\nIt is notable that during our Chandra observation there were no \ncounts detected from within the error circle of the VLA radio source \nreported by Berger and Frail (GCN 1173).\n\nFurther information about the Chandra observations, including 23 \nadditional sources down to the detection limit of the observation, \ncan be found on the HETE web page:\n\n   http://space.mit.edu/HETE/Bursts/GRB011130.\n\nThis message may be cited.",
  "circularId": 1190,
  "createdOn": 1008138690000,
  "email": "grr@space.mit.edu",
  "subject": "GRB011130 (=XRF011130): Further analysis of Chandra Target of",
  "submitter": "George Ricker at MIT  <grr@space.mit.edu>",
  "eventId": "GRB 011130"
}