Quasar jets are particle accelerators thousands of light years long – see https://archaeologynewsnetwork.blogspot.com/2020/06/quasar-jets-are-part… … very high energy gamma ray emissions from quasars is not concentrated in the region of the galaxy black hole. Instead, it extends over several thousand light years along jets of plasma. A sort of galactic jet of plasma, perhaps – many times multiplied. Apparently, the discovery is causing a shake up. Where have we heard that before. It should cause a shake up but odds are it won't.
At https://phys.org/news/2020-06-astronomers-teraelectronvolt-emission-gamm… … astronomers detect teraelectronvolt emission from the gamma ray burst GRB 190114C. The finding, they say, could improve the understanding of very high energy sources in the universe. The article is currently on the arXiv prepublication site – go to https://arxiv.org/pdf/2006.07249.pdf