The diffuse radio emission in the high-redshift cluster PSZ2 G091.83+26.11 - total intensity and polarisation analysis with Very Large Array 1-4 GHz observations: https://arxiv.org/abs/2304.05893 - "we classify this source as a #RadioRelic. [...] We propose an off-axis merger and/or multiple merger events to explain the position and orientation of the relic. Given the properties of the radio relic, we speculate that PSZ2G091.83+26.11 is in a fairly young merger state."

Deep Low-frequency Radio Observations of #A2256 - The Filamentary #RadioRelic / The ultra-steep spectrum radio halo: https://iopscience.iop.org/article/10.3847/1538-4357/ac4708/meta / https://arxiv.org/abs/2209.03288 -> Untangling a Knot of #GalaxyClusters: https://chandra.si.edu/photo/2023/a2256/ / https://www.nasa.gov/mission_pages/chandra/news/untangling-a-knot-of-galaxy-clusters.html