Africa-Press – Cape verde. The cryptic circular ring was initially thought to be an Odd Radio Circle (ORC) – a very large astronomical object of unknown origin that, at radio wavelengths, is highly circular and bright along its edges. Currently, astronomers have observed at least five such rings in space.
Astronomers from Western Sydney University and a team of international experts have suggested that a mysterious recently-discovered circular ring in the Large Magellanic Cloud (LMC) could actually be an intergalactic Supernova Remnant, and not an Odd Radio Circle as previously thought.
The scientific team has dubbed the discovery a “rogue” Supernova Remnant, suggesting that the mysterious space ring could be the remains of an exploded star. Large Magellanic Cloud is a satellite galaxy of the Milky Way, so the location of the ring could also indicate its intergalactic origin.
While ORCs are highly circular at radio wavelengths, the newly-discovered object had a flatter radio spectral index, lacked a prominent galaxy host and was also significantly larger in size. All these features prompted scientists to suggest that the ring is a different kind of object.
There are also other versions. For instance, the ring could be a remnant of the super-flare activity from a nearby Milky Way star, or just a larger type of ORC.
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