Using the most capable radio telescopes, an international team of astronomers was able to take a detailed picture of odd radio circles (ORCs) – gigantic radio waves and mysterious astronomical objects of an unknown nature.
Odd radio circles reach enormous sizes in diameter – at least a million light-years across – which is 16 times larger than our Milky Way.
There are three theories that could explain the origin of ORCs:
- These circles could be the traces of a massive explosion in their host galaxy, like the merger of supermassive black holes.
- They could result from an active and massive star formation, a shock wave spreading through the galaxy.
- These circles could be powerful jets of energetic particles released from the center of the galaxy.
Astronomers hope that the unique image will help them understand the nature of odd radio circles and prove one of their origin's theories.