Galaxies marked by four jets extending deep into space may form more simply than previously thought.
A simulation shows the development of an X-shaped jet with in falling gas marked in red and black hole launched jets in blue.
This mechanism would replace what has been the popular explanation for the creation of X-shaped radio galaxies, the collision of galaxies."Two galaxies collide, causing their supermassive black holes to merge, which changes the spin of the remnant black hole and the direction of the jet," Lalakos said, describing that scenario.
"Usually, researchers put a black hole in the middle of a simulation grid and place a large, already-formed gaseous disk around it, and then they may add ambient gas outside the disk," Lalakos said."In my simulation, I tried to assume nothing."
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