{
  "bibcode": "2001GCN..1185....1R",
  "body": "GRB011130 (=XRF011130): Results of a Target of Opportunity Observation \nwith the Chandra X-ray Observatory\n\nG. Ricker, P. Ford, G. Monnelly, N. Butler, 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., \nGCN1165). The revised error circle for XRF011130 (Ricker et al. \nGCN1178) fit completely within the field-of-view of the ACIS-I array \non Chandra.  The observation duration was 30 ksec.\n\nAs a result of the special arrangements made by the Chandra Science \nCenter to expedite the pre-processing of the data from our \nobservation, the TOO Science Team has been able to establish the \nlocation and relative intensity for the 10 brightest X-ray sources \nwithin the HETE field.\n\nThe following table lists the J2000 coordinates of the 10 brightest\nsources we have established in the HETE Field:\n\n     Chandra Name          RA          DEC     dRA(s)  dDEC('')  Cts \nCXOU J030527.9+034657   3 5 27.88  3 46 57.04  0.061     0.96    110 \nCXOU J030532.5+035140   3 5 32.50  3 51 40.37  0.061     0.96    101 \nCXOU J030534.3+034958   3 5 34.26  3 49 58.94  0.061     0.96     33 \nCXOU J030514.2+034854   3 5 14.21  3 48 54.19  0.061     0.96     30 \nCXOU J030550.1+035009   3 5 50.10  3 50  9.38  0.064     0.99     27 \nCXOU J030458.7+034702   3 4 58.68  3 47  2.92  0.069     1.03     27 \nCXOU J030541.4+034808   3 5 41.43  3 48  8.02  0.061     0.97     26 \nCXOU J030534.2+034208   3 5 34.22  3 42  8.75  0.070     1.10     23 \nCXOU J030512.9+034936   3 5 12.91  3 49 36.35  0.062     0.97     22 \nCXOU J030536.0+035303   3 5 36.01  3 53  3.58  0.062     0.97     21 \n\nThe astrometry was calibrated by correlating against four USNO A2 \ncatalog 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 celldetect, \nthe error reported by the correlation code, and the error estimate \nfrom the star reference catalog.\n\nWe gratefully acknowledge the timely assistance of the personnel\nat the Chandra Science Center in the preparation of these data.\n\nThis message may be cited.",
  "circularId": 1185,
  "createdOn": 1008057050000,
  "email": "roland@space.mit.edu",
  "subject": "GRB011130 (XRF011130) Chandra Observations",
  "submitter": "Roland Vanderspek at MIT  <roland@space.mit.edu>",
  "eventId": "GRB 011130"
}