For the first time ever, a multinational team of astronomers from France, the UK, the United States, Germany, Spain, the Netherlands and Australia, has detected emission from the base of black-hole jets. Artist’s impression of the GX 339-4 binary system, which consists of a 7-solar-mass black hole that accretes mass from its companion, a low-mass star, shown on the left (ESA / ATG medialab) “One of the best-studied stellar-mass black holes...
