Tidal disruption events
Watching dormant black holes come to life
When a star passes too close to a massive black hole, tidal forces can tear the star apart. The resulting flare gives us a rare opportunity to watch a previously quiet black hole begin accreting material and launching an outflow in real time.
I use radio observations to measure the energy, velocity and environment of these outflows, and to understand the connection between accretion discs, jets and winds.