When AT2018hyz, nicknamed “Jetty,” was first found, radio telescopes didn’t pick up any signs of a material outflow. This is quite common. About 80% of tidal disruption events (TDEs) behave similarly, leading astronomers to focus on other, more promising objects. A few years later, radio data from the Very Large Array (VLA) revealed that Jetty was back, radiating an impressive 1.4 millijansky at 5 GHz.
The brightness of Jetty has only grown since then. In fact, it’s emitting energy at a scale that dwarfs even the fictional Death Star from *Star Wars*. Estimates suggest Jetty’s emissions could be anywhere from a trillion to 100 trillion times more energetic. Initially, Jetty wasn’t detected because its radiation was directed away from Earth. Astronomers expect to confirm this when the energy reaches its peak.
Now, Cendes and her team are on the lookout for similar high-energy TDEs. Jetty’s behavior indicates that delayed outflows might be more frequent than once thought. “If you have an explosion, why would you expect something to happen years later if you didn’t see anything initially?” Cendes questions. This phenomenon opens a new avenue for exploration, challenging previous assumptions in astronomy.
Recent studies suggest that understanding these delayed emissions can reshape our view of cosmic events. As we gather more data, we may discover that many astronomical phenomena are far more complex than they seem.
For further insights into TDEs, you can check out this report from EurekAlert.
DOI: Astrophysical Journal, 2026. 10.3847/1538-4357/ae286d.
