T. P. Dominici, R. Teixeira, and J. E. Horvath, Instituto Astronomico e Geofisico (IAG), Universidade de Sao Paulo (USP); and P. Holvorcem, Instituto de Matematica e Estatistica, Universidade Estadual de Campinas, report: "The possible optical counterpart (IAUC 6895, 6901, 6903) for GRB 980425 (IAUC 6884) has been observed at the IAG/USP Abrahao de Moraes Observatory (Valinhos, Brazil). Observations were performed with the 0.19-m Askania-Zeiss Meridian Circle equipped with a CCD camera on May 9.2, 10.2, 12.2, 19.2, 20.2, and 22.2 UT. Reduction of the whole data set using specific astrometric techniques (Teixeira et al. 1992, A.Ap. 264, 307) has provided the position R.A. = 19h35m03s.310 +/- 0s.007, Decl. = -52o50'44".65 +/- 0".05 (equinox J2000.0, FK5 reference frame). This refined position is remarkably close to that of the radio transient reported by Tinney et al. (IAUC 6896)."
International Astronomical Union Circular
- Pub Date:
- June 1998