{
  "circularId": 1439,
  "body": "GRB/XRF 020427, detection of an underlying system with the VLT\n------------------------------------------------\n\nA. J. Castro-Tirado and J. Gorosabel (Instituto de Astrofísica\nde Andalucía, IAA-CSIC, Granada)\nC. Sánchez-Fernández (ESA-VILSPA, Madrid)\nN. Lund and S. Brandt (DSRI, Copenhagen)\nJ. M. Castro Cerón (ROA, San Fernando)\n\ncommunicate:\n\n\"We have observed the field of the GRB/XRF 020427 (GCN Circulars 1383, 1384,\n1386, 1390, 1394) on 11.388-11.397 June 2002 with the 8.2-m VLT telescope\nat Paranal ESO's observatory (equipped with FORS2). Imagery was obtained\nin the B- and R-bands (300-s exposure time each) under rather poor seeing\nconditions (1\".2). The position of the likely X-ray afterglow detected by\nBSAX and followed-up by Chandra (GCN Circulars 1387, 1392) is coincident\nwith the north part of a extended (about 4\" x 2\"), blue object with R =\n23.3 +/- 0.2 and B = 23.8 +/- 0.4 which is consistent with the galaxy system\nreported independently by Fruchter et al. (GCN Circ. 1440). An identification\nchart is posted at www.iaa.es/~ajct/XRFs/xrf02042",
  "email": "ajct@iaa.es",
  "submitter": "Alberto Castro-Tirado at Inst.de Astro. de Andalucia  <ajct@iaa.es>",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "createdOn": 1024983940000,
  "format": "text/plain",
  "eventId": "XRF 020427",
  "bibcode": "2002GCN..1439....1C",
  "version": 3,
  "editedOn": 1777052632241,
  "subject": "GRB/XRF 020427, detection of an underlying system with the VLT"
}