Radio jets from stellar tidal disruptions
  A star that passes too close to a massive black hole will be torn apart by
tidal forces. The flare of photons emitted during the accretion of the stellar
debris is predicted to be observable and candidates of such events have been
observed at optical to X-ray frequencies. If a fraction of the accreted
material is fed into a jet, tidal flares should be detectable at radio
frequencies too, thus comprising a new class of rare radio transients. Using
the well-established scaling between accretion power and jet luminosity and
basic synchrotron theory, we construct an empirically-rooted model to predict
the jet luminosity for a time-dependent accretion rate. We apply this model to
stellar tidal disruptions and predict the snapshot rate of these events. For a
small angle between the observer and the jet, our model reproduces the observed
radio flux of the tidal flare candidate GRB 110328A. We find that future radio
surveys will be able to test whether the majority of tidal disruptions are
accompanied by a jet.
