Puzzling radio signal unveils a galaxy cluster’s core

Astronomers observing a mysterious radio halo from the galaxy cluster Abell 1213 have uncovered something unexpected. While the radio signals themselves remain puzzling, they have allowed researchers to unveil the core of the galaxy cluster, right down to the central galaxy contained within. 

Even more intriguing about the discovery is that the researchers found evidence of mergers between the galaxies with the cluster. The off-center nature of the radio halo has also provided scientists with quite a puzzle, as most radio signals of this sort act more in line with the gas and…