Using the LOw-Frequency ARray (LOFAR), astronomers have discovered a diffuse radio halo around the spiral galaxy NGC 4565. The finding, reported in a paper published July 16 on the arXiv pre-print server, could shed more light on the nature of NGC 4565, disclosing important insights about star-forming activity and the distribution of cosmic-ray electrons in this galaxy.
source https://www.lifetechnology.com/blogs/life-technology-news-blog/warped-diffusive-radio-halo-detected-around-the-galaxy-ngc-4565