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Black Holes Surrounded by Gaseous 'Fountains,' Not 'Donuts'

Discover how recent findings about supermassive black holes reveal dynamic circular patterns resembling fountains instead of donuts.

CO molecular gas and C atomic gas distribute around a black hole, as shown in orange and cyan, respectively.Credit: ALMA (ESO/NAOJ/NRAO), Izumi et al.

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Where once were donuts, now there may be fountains. Not literally, unfortunately, but new astronomical observations are rewriting scientists’ conceptions of what the area around a black hole looks like, and the new evidence seems to lean heavily away from the morning delicacy.

Scientists estimate that most galaxies have a supermassive black hole at their center, pulling in everything around them with tremendous gravitational forces. Up until now, astronomers believed that before material falls into a black hole it builds up into a structure that looks something like a cosmic donut.

Takuma Izumi, a researcher at the National Astronomical Observatory of Japan (NAOJ), led a team of astronomers that used the Atacama Large Millimeter/submillimeter Array (ALMA) to observe the supermassive black hole at the center of the Circinus Galaxy 14 million light-years from Earth. And, in their research they found that the material surrounding black holes actually looks much different.

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