The Discovery and Broad-band Follow-up of the Transient Afterglow of GRB   980703
  We report on the discovery of the radio, infrared and optical transient coincident with an X-ray transient proposed to be the afterglow of GRB 980703. At later times when the transient has faded below detection, we see an underlying galaxy with R=22.6; this galaxy is the brightest host galaxy (by nearly 2 magnitudes) of any cosmological GRB thus far. In keeping with an established trend, the GRB is not significantly offset from the host galaxy. Interpreting the multi-wavelength data in the framework of the popular fireball model requires that the synchrotron cooling break was between the optical and X-ray bands on July 8.5 UT and that the intrinsic extinction of the transient is Av=0.9. This is somewhat higher than the extinction for the galaxy as a whole, as estimated from spectroscopy. 
J. S. Bloom, D. A. Frail, S. R. Kulkarni, S. G. Djorgovski, J. P.   Halpern, R. O. Marzke, D. R. Patton, J. B. Oke, K. D. Ho...