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We present a search, using the Murchison Widefield Array (MWA), forelectromagnetic counterparts to two candidate high energy neutrino eventsdetected by the ANTARES neutrino telescope in 2013 November and 2014 March.These events were selected by ANTARES because they are consistent, within 0.4degrees, with the locations of galaxies within 20 Mpc of Earth. Using MWAarchival data at frequencies between 118 and 182 MHz, taken ~20 days prior to,at the same time as, and up to a year after the neutrino triggers, we look fortransient or strongly variable radio sources consistent with the neutrinopositions. No such counterparts are detected, and we set a 5 sigma upper limitfor low-frequency radio emission of ~1E37 erg/s for progenitors at 20 Mpc. Ifthe neutrino sources are instead not in nearby galaxies, but originate inbinary neutron star coalescences, our limits place the progenitors at z > 0.2.While it is possible, due to the high background from atmospheric neutrinos,that neither event is astrophysical, the MWA observations are neverthelessamong the first to follow up neutrino candidates in the radio, and illustratethe promise of wide-field instruments like MWA to detect electromagneticcounterparts to such events.

Murchison Widefield Array Limits on Radio Emission from ANTARES Neutrino Events