How Black Holes Are Created and What Happens When Galaxies Merges
by Alice03
When two galaxies merge, their central black holes can spiral together and merge too, and the physics of that merger can fling the resulting black hole clean out of the galaxy. This room covers how these runaway black holes form, why some get a bigger kick than others, and what happens to a galaxy afterward.
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When two galaxies, each with its own supermassive black hole, merge into one galaxy, what typically forms at the new galaxy's center first?
multiple choice
AA single, fully merged black hole with no intermediate stage
BA pair of black holes orbiting each other, known as a binary
CA neutron star formed from the two black holes colliding
DA stable ring of gas with no black hole at all
Think about what happens right after the two galaxies overlap, before anything has had time to spiral together.
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