2010CBET.2242....1R

S. Ryder and R. Covarrubias, Anglo-Australian Observatory; S. Amy, Australia Telescope National Facility; M. Argo, Curtin University of Technology; C. Stockdale, Marquette University; S. Van Dyk, Spitzer Science Center, California Institute of Technology; S. Immler, Goddard Space Flight Center; K. Weiler, Naval Research Laboratory; and N. Panagia, Space Telescope Science Institute and Observatory of Catania, report the detection of radio emission near the position of the type-Ib/c supernova 2010as (cf. CBETs 2215, 2221) with the Australia Telescope Compact Array radio telescope. Flux density measurements were made at 9.0 GHz of 1.45 ± 0.09 mJy on March 27.8 UT, and 1.48 ± 0.08 mJy on April 3.7. Only a 3-sigma upper limit of 0.14 mJy at 5.5 GHz was measured at the earlier epoch, but at the latter epoch a source of 1.40 ± 0.10 mJy was found. The measured position of the radio emission of R.A. = 15:49:49.24, Decl. = -29:23:10.0 (equinox 2000.0) is in good agreement with the measured optical position end figures 49s.23, 09".7 (CBET 2215). The radio emission has likely already peaked at 9.0 GHz but should soon start increasing rapidly at longer radio wavelengths. Radio observations at the Australia Telescope Compact Array are continuing.