SIMBAD references

A. M. Soderberg, S. R. Kulkarni, and E. Berger, California Institute of Technology; and D. A. Frail, National Radio Astronomy Observatory, report that an observation of SN 2003bg with the Very Large Array at 8.46 GHz on Mar. 4.07 UT reveals a radio source with a flux density of 2.50 ± 0.06 mJy that is coincident with the supernova (IAUC 8082). Estimated as being about 2 weeks past the explosion time (IAUC 8084), SN 2003bg has a radio luminosity that is 2 percent of that observed for SN 1998bw at 14 days after the supernova explosion (Kulkarni et al. 1998, Nature 395, 663).