Unraveling the Core of a Distant Galaxy Cluster through Radio Signals

Astronomers investigating an anomalous radio emission from the galactic cluster Abell 1213 have discovered that it may come from the 1.66 million light-year-long radio tail of its dominating central galaxy, 4C29.41. The team also found evidence of mergers between galaxies in the cluster, which is located around 647 million light-years from Earth. The radio emission is not a radio halo, but rather a radio relic, possibly caused by a past galactic merger. The cluster's core has an intricate substructure, and star-forming galaxies are not restricted to the edges of Abell 1213.