Iras 18293−0941 identified as first Milky Way microblazar

Astronomers have identified the first microblazar within the Milky Way, an object long theorized but never confirmed. The system, named Iras 18293−0941, is located approximately 12,000 light-years from Earth, hidden behind a curtain of interstellar dust.

Iras 18293−0941 is a binary system consisting of a massive, hot star and a black hole. The two bodies orbit each other every 11 days, 9 hours, 7 minutes, and 12 seconds. As matter from the star falls toward the black hole, a portion is consumed while the rest is expelled in two opposing jets traveling at three-quarters the speed of light. The defining characteristic of this microblazar is that one of these jets is pointed almost directly toward Earth.

While supermassive black holes in distant galaxies frequently emit such jets toward Earth—phenomena known as blazars—this discovery marks the first time a miniature version, or microblazar, has been verified within our own galaxy.