{
  "bibcode": "2006GCN..4955....1L",
  "body": "Y.Q. Lou, X.F. Wang (THCA), W.K. Zheng, Y.L. Qiu(NAOC),\nI.C. Yen (NTNU), C.S. Lin, H.C. Lin, K.Y. Huang (NCU), \nY. Urata (Saitama U/RIKEN) on behalf of EAFON report\n\n \"We have observed GRB 060403 X-ray afterglow position (Boyd et\nal. GCN 4945, Mangano et al. GCN 4947) using Xinglong (China) 0.8m and\nLulin (Taiwan) 1.0m telescopes on April 3 and 5. In I-band images\ntaken at Lulin, we found two sources at the X-ray error region which\ndo not appear in DSSII images. Since our I-band images are deeper than\nDSSII, we have monitored the sources. These sources do not show any\nsignificant variabilities in our observational period. Thus we\nconclude that these two sources do not related with GRB afterglow.\n\n The limiting magnitude are summarize below.\n\n -------------------------------------------------------\n Date    Delay (h) Site     Filter  Exp.(s)   Limit mag\n -------------------------------------------------------\n Apr. 3   6.07     Xinglong R       600s x 12 20.4\n Apr. 3   5.87     Lulin    I       300s x  5 21.0\n Apr. 5  55.63     Lulin    I       300s x  2 19.6\n -------------------------------------------------------\n\nThis message may be cited.\"",
  "circularId": 4955,
  "createdOn": 1144402220000,
  "email": "urata@crab.riken.go.jp",
  "subject": "GRB 060403 Optical observations",
  "submitter": "Yuji Urata at RIKEN  <urata@crab.riken.go.jp>",
  "eventId": "GRB 060403"
}