{
  "bibcode": "1998GCN...130....1Z",
  "body": "GRB 980703. NEW OPTICAL OBSERVATIONS\n------------------------------------\n\nM.R. Zapatero Osorio (Instituto de Astrofisica de Canarias, IAC, \n                      E-38200 La Laguna, Tenerife, Spain)\nA. Castro-Tirado     (Laboratorio de Astrofisica Espacial y Fisica\n                      Fundamental, LAEFF-INTA, Madrid)\nJ. Gorosabel         (LAEFF)\nA. Oscoz, S. Kemp    (IAC)\nF. Frontera, L. Nicastro (on behalf of the BeppoSAX team)\n \n\nReport:\n\nImages in the R-band have been obtained at the 0.8-m IAC80 telescope \n(Teide Observatory) on July 4 and 6 including the BeppoSAX error box \nfor the X-ray source 1SAX J235907+0835 presumably related to GRB980703 \nwhich was detected by both BATSE and RXTE.  These data reveal an object \nlocated at RA = 23h 59m 6.7s  DEC = 8d 35' 7'' (+/- 2'', Eq. J2000) \nwhich has faded by about 1.5 mag at this wavelength.  A preliminary \nphotometric analysis allows us to determine R = 20.6 +/- 0.1 \n(July 4.123 UT) and 22.1 +/- 0.2 (July 6.137 UT).  No other objects \nvarying by more than 0.2 mag are seen down to a limiting magnitude of \nR = 22.5.  A finder chart is available via anonymous ftp to  \nftp.ll.iac.es (cd publong/grb980703/).",
  "circularId": 130,
  "createdOn": 899779192000,
  "email": "ajct@laeff.esa.es",
  "subject": "GRB980703 (optical R observations)",
  "submitter": "Alberto Castro-Tirado at LAEFF-INTA  <ajct@laeff.esa.es>",
  "eventId": "GRB 980703"
}