ATCA obs. of eROSITA tidal disruption events

We find radio sources coincident with half of the transient events (11 TDEs), with eight radio sources showing statistically significant variability over a 6 month period. We model the radio spectra of six sources with sufficiently bright radio emission and find the sources show radio spectra consistent with optically thin synchrotron emission and radio outflow minimum radii of 10^16^-10^17^cm, velocities 0.01c-0.05c, and energies 10^48^-10^51^erg.

On comparison with the radio properties of an optically selected TDE sample at similar late times, we find no significant difference in the radio luminosity range or radio detection rate. We find a tentative positive trend with peak radio and X-ray luminosity, but require further observations to determine if this is real or due to observational bias due to the large range in distances of the events. Interestingly, none of the X-ray-selected events show late-rising radio emission, compared to 45% of radio-detected sources of an optically selected sample that showed late-rising radio emission.