An international team of astronomers has studied variable broadband emission of the gamma-ray blazar Markarian 501 during a period of its high X-ray activity. The research, published January 21 on the arXiv preprint server, could lend better understanding of emission mechanisms in blazars.
Source:
https://phys.org/news/2020-01-astronomers-broadband-variability-blazar-markarian.html