GRB 970228
Abstract
K. Hurley, Space Sciences Laboratory, Berkeley, on behalf of the Ulysses Gamma-Ray Burst Team; E. Costa and M. Feroci, Istituto Astrofisica Spaziale, CNR, Frascati; F. Frontera, Universita di Ferrara and Istituto TESRE, CNR, Bologna; D. Dal Fiume and M. Orlandini, Istituto TESRE, CNR, Bologna, report: "A refined triangulation of GRB 970228 has been done using Ulysses and SAX GRBM data. The resulting position is an annulus whose half-width is estimated to be 31" at 3-sigma confidence, or approximately one- half that previously reported by Hurley et al. (IAUC 6578). The R.A. and Decl. of the annulus center and the radius are unchanged, namely R.A. = 11h03m47s, Decl. = +36o31'.5 (equinox 2000.0), and 83.422 deg. The galaxy reported by Groot et al. (IAUC 6588) lies 20" from the annulus center line, and is therefore consistent with this new localization."
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- March 1997
- Bibcode:
- 1997IAUC.6594....1H