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MERLIN observations of SN2007gr

ATel #1210; M. K. Argo, R. J. Beswick, A. Pedlar, T. W.B. Muxlow (Jodrell Bank Observatory)
on 10 Sep 2007; 08:33 UT
Credential Certification: Megan Argo (mkargo@manchester.ac.uk)

Subjects: Radio, Supernovae

We report MERLIN observations of the supernova 2007gr at 1.6 and 5 GHz. From 17 August to 31 August we observed using the Defford and Darnhall antennas (and the Mk2 antenna when available) at frequencies of 1.4 and 1.6 GHz but found no source at the optical position given in CBET 1034 to a 3-sigma limit of 0.38mJy/beam. From August 31 to September 3 we observed at 4.994 GHz with the Darnhall-Mk2 baseline, and from September 3rd to 6th with the addition of the Defford antenna, and found no source to a 3-sigma limit of 0.43mJy/beam. Observations are continuing subject to telescope availability. I thank the MERLIN operations staff for making these observations possible during the maintenance period.