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Tidal disruption events (TDEs) are transient flares produced when a star isripped apart by the gravitational field of a supermassive black hole (SMBH). Wehave observed a transient source in the western nucleus of the merging galaxypair Arp 299 that radiated >1.5x10^52 erg in the infrared and radio, but wasnot luminous at optical or X-ray wavelengths. We interpret this as a TDE withmuch of its emission re-radiated at infrared wavelengths by dust. Efficientreprocessing by dense gas and dust may explain the difference betweentheoretical predictions and observed luminosities of TDEs. The radioobservations resolve an expanding and decelerating jet, probing the jetformation and evolution around a SMBH.

A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger