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We present the first systematic search for GHz frequency radio emission fromdirectly imaged exoplanets using Very Large Array (VLA) observations ofsufficient angular resolution to separate the planets from their host stars. Weobtained results for five systems and eight exoplanets located at $\lesssim 50$pc, through new observations (Ross 458, GU Psc, and 51 Eri) and archival data(GJ 504 and HR 8799). We do not detect radio emission from any of theexoplanets, with $3\sigma$ luminosity upper limits of $(0.9-23)\times10^{21}$erg s$^{-1}$. These limits are comparable to the level of radio emissiondetected in several ultracool dwarfs, including T dwarfs, whose masses are onlya factor of two times higher than those of the directly-imaged exoplanets.Despite the lack of detections in this pilot study, we highlight the need forcontinued GHz frequency radio observations of nearby exoplanets at$\mu$Jy-level sensitivity.

A Pilot Radio Search for Magnetic Activity in Directly Imaged Exoplanets