Recent simulations of two black holes colliding at close to the speed of light have shed light on the enigmatic physics behind what has been called by one astrophysicist as “one of the most violent events you can imagine in the universe.” “It’s a bit of a crazy thing to blast two black holes head
Recent simulations of two black holes colliding at close to the speed of light have shed light on the enigmatic physics behind what has been called by one astrophysicist as “one of the most violent events you can imagine in the universe.”
This simulation shows two black holes colliding near the speed of light, revealing the mysterious physics of what one astrophysicist calls “one of the most violent events you can imagine in the universe.” The work is the first detailed look at the aftermath of such a cataclysmic clash, and shows how a remnant black hole would form and send gravitational waves through the cosmos.
Physicists have studied the waves emitted after black holes merge by simplifying general relativity—Einstein’s theory of how gravity works—using equations that ignore subtle, but important, gravitational effects of the merger. Berti thinks that approach is biased because it relies on “linear approximations,” the assumption that the gravitational waves produced during the merger are weak.
“General relativity is nonlinear, which means that the gravitational waves themselves will also produce more gravitational waves,” said Mark Ho-Yeuk Cheung, a Johns Hopkins doctoral physics student who led the research.
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