The authors of the work made observations using the MWA (Murchison Widefield Array) radio telescope at the Radio Astronomy
We looked at the data and, reducing the frequency,saw a ghostly jellyfish-like structure begin to appear. Although the image is very bright at regular FM radio frequencies, at 200 megahertz the radiation practically disappears. No other extragalactic radiation that has been observed before has disappeared so quickly.
Torrance Hodgson, lead author from Curtin University
The ultra-high-spectrum synchrotron source (USS) looked like a jellyfish, so it was named USS Jellyfish.
The authors believe that this unusual phenomenon is due towith events that occurred 2 billion years ago with a handful of galaxies that ejected powerful jets of plasma. Then the plasma dimmed and, one might say, was at rest.
However, more recently, plasma has begunstir after very mild shock waves have passed through the system. This re-ignited the plasma. As a result, we saw her in a form similar to a jellyfish.
However, this phenomenon can only be observed withusing low-frequency radio telescopes. Most radio telescopes cannot provide the necessary conditions for observing it due to their design or location. The authors hope that new data on the mysterious structure will be obtained after the completion of the project to deploy the SKA radio interferometer.
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