Mini-jets of material ejected from a central supermassive black hole appear to be the culprits behind faint radio wave emissions in 'radio-quiet' quasars. A study of gravitationally lensed images of four radio-quiet quasars has revealed the structure of these distant galaxies in unprecedented detail. This has enabled astronomers to trace the radio emissions to a very small region at the heart of the quasars,and helped to solve a 50-year-obsolete puzzle approximately their source. The results will be presented by Dr Neal Jackson at the National Astronomy assembly in Nottingham on Friday, 1st July.
Source: phys.org