Topic: NASA’s Rossi X-ray Timing Explorer Satellite
Written by Francis Reddy
NASA’s Goddard Space Flight Center
Greenbelt, MD – A curious correlation between the mass of a galaxy’s central black hole and the velocity of stars in a vast, roughly spherical structure known as its bulge has puzzled astronomers for years.
An international team led by Francesco Tombesi at NASA’s Goddard Space Flight Center in Greenbelt, MD, now has identified a new type of black-hole-driven outflow that appears to be both powerful enough and common enough to explain this link.
The supermassive black holes in active galaxies can produce narrow particle jets (orange) and wider streams of gas (blue-gray) known as ultra-fast outflows, which are powerful enough to regulate both star formation in the wider galaxy and the growth of the black hole. Inset: A close-up of the black hole and its accretion disk. (Artist concept credit: ESA/AOES Medialab)
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