Previously accelerated by black holes, the particles are reaccelerated by shock waves resulting from the collision. The phenomenon helps scientists understand the structure of the universe on the largest scale (images: researcher’s archive)
A cosmic phenomenon on a colossal scale, resulting from the acceleration of a gas cloud by a black hole and its reacceleration by the shock waves from the merging of two galaxy clusters, has been observed. “The electrons that make up the cloud initially bounce off the supermassive black hole at the center of one of the galaxies and accelerate as a result. They are then reaccelerated by shock waves that propagate in the galaxy cluster when it collides with another cluster,” Andrade-Santos told.
Galaxy clusters grow through the gravitational accretion of...
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