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Tidal Disruption Events in the Radio

Presentation #306.04 in the session Tidal Disruption Events Across the Electromagnetic Spectrum.

Published onMay 03, 2024
Tidal Disruption Events in the Radio

Within the past decade, it has become clear that tidal disruption events (TDEs) can power a variety of jets and outflows, cementing their status as premier probes of accretion processes in supermassive black holes (SMBHs). Mass ejection in TDEs is best characterized via radio observations, which reveal synchrotron radiation produced in the shock formed between fast-moving outflows and the ambient interstellar medium. Radio observations of TDE outflows allow us to (1) determine the properties of outflowing material (energy, size, expansion velocity) and (2) trace the ambient density profile around previously-dormant SMBHs on scales of a few light years. I will discuss exciting ongoing observations of TDEs in the local Universe and beyond, which reveal an unexpectedly diverse population. The increased sample size now being realized by new wide-field multi-wavelength surveys has enabled the first constraints on the prevalence of radio emission in TDEs weeks to years post-disruption, which will shed further light on the physical conditions required for jet and outflow formation in TDEs.

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