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The star EPIC 249706694 (HD 139139) was found to exhibit 28 transit-likeevents over an 87 day period during the Kepler mission's K2 Campaign 15(Rappaport et al. 2019). These events did not fall into an identifiable patternand could not be explained by a multitude of transit scenarios explored by theauthors. We conduct follow-up observations at C-band frequencies with the GreenBank Telescope as part of the ongoing Breakthrough Listen search fortechnosignatures. We search for narrow band signals above a signal-to-noisethreshold of 10 and with Doppler drift rates within +-5 Hz/s. We detect noevidence of technosignatures from EPIC 249706694 and derive an upper limit forthe EIRP (Equivalent Isotropic Radiated Power) of putative transmissions to be10 TW.

Breakthrough Listen Follow-up of the Random Transiter (EPIC 249706694/HD 139139) with the Green Bank Telescope