Artist's impression of a galaxy that is releasing material via two particle jets (red/orange) as well as via ultra-fast outflows (grey/blue), both powered by a black hole. Credit: ESA/AOES Medialab
Something unusual has been spotted lurking around several galaxies’ central black holes. Astronomers think it may be limiting the growth of the black holes – and stars elsewhere in the galaxies, too.
Astronomers studying nearby galaxies have found a new type of outflow called an ultra-fast outflow, or UFO. An international team of astronomers led by Francesco Tombesi from the University of Maryland and NASA’s Goddard Space Flight Centre in Maryland, US, carried out the work. They published their findings in Monthly Notices of the Royal Astronomical Society yesterday.
Read More: http://blogs.scientificamerican.com/basic-space/2012/02/29/how-ufos-curb-black-hole-growth/
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