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We present high-resolution ($\sim 1"$), 1.5 GHz continuum observations of thebrightest cluster galaxies (BCGs) of 13 CLASH (Cluster Lensing And Supernovasurvey with Hubble) clusters at $0.18<z<0.69$ with the Karl G. Jansky VeryLarge Array (JVLA). Radio emission is clearly detected and characterized for 11BCGs, while for two of them we obtain only upper limits to their radio flux($<0.1$ mJy at 5$\sigma$ confidence level). We also consider five additionalclusters whose BCG is detected in FIRST or NVSS. We find radio powers in therange from $2\times 10^{23}$ to $\sim 10^{26}$ $W~Hz^{-1}$ and radio spectralindices $\alpha_{1.5}^{30}$ (defined as the slope between 1.5 and 30 GHz)distributed from $\sim -1$ to $-0.25$ around the central value $\langle \alpha\rangle= - 0.68$. The radio emission from the BCGs is resolved in three cases(Abell 383, MACS J1931, and RX J2129), and unresolved or marginally resolved inthe remaining eight cases observed with JVLA. In all the cases the BCGs areconsistent with being powered by active galactic nuclei (AGN). The radio powershows a positive correlation with the BCG star formation rate, and a negativecorrelation with the central entropy of the surrounding intracluster medium(ICM) except in two cases (MACS J1206 and CL J1226). Finally, over therestricted range in radio power sampled by the CLASH BCGs, we observe asignificant scatter between the radio power and the average mechanical powerstored in the ICM cavities.

JVLA 1.5GHz continuum observation of CLASH clusters I: radio properties of the BCGs