Black Hole 'Donuts' are Actually 'Fountains' - School of Science, the University of Tokyo
Nov 30, 2018

Black Hole 'Donuts' are Actually 'Fountains'

Overview of the press release

Based on computer simulations and new observations from the Atacama Large Millimeter/submillimeter Array (ALMA), researchers have found that the rings of gas surrounding active supermassive black holes are not simple donut shapes. Instead, gas expelled from the center interacts with infalling gas to create a dynamic circulation pattern, similar to a water fountain in a city park.

Figure 1: Artist’s impression of the gas motion around the supermassive black hole in the center of the Circinus Galaxy. The three gaseous components form the long-theorized “donut" structure: (1) a disk of infalling dense cold molecular gas, (2) outflowing hot atomic gas, and (3) gas returning to the disk.
Credit: ALMA (ESO/NAOJ/NRAO)

 

To read the full press release, please visit the ALMA (NAOJ) website.

 

Professor Kotaro Kohno (Institute of Astronomy, Graduate School of Science) participated in this research.

 

Publication details

Journal Astrophysical Journal
Title Circumnuclear Multiphase Gas in the Circinus Galaxy. II. The Molecular and Atomic Obscuring Structures Revealed with ALMA
Authors Takuma Izumi, Keiichi Wada, Ryosuke Fukushige, Sota Hamamura, and Kotaro Kohno*
DOI 10.3847/1538-4357/aae20b
Paper link http://iopscience.iop.org/article/10.3847/1538-4357/aae20b

 

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