Using the LOw Frequency ARray (LOFAR), astronomers have probed PSZ2 G099.86+58.45, one of the densest cluster of galaxies known to date. The study revealed the presence of a radio halo in this cluster, making it one of the most distant such features ever discovered. The finding is detailed in a paper published July 24 on arXiv.org.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/radiohalodet.jpg)
Source:
https://phys.org/news/2019-07-radio-halo-galaxy-cluster-psz2.html