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Monday, 18 January 2010

Does the event horizon of a black hole increase or decrease by adding mass?

The radius of the event horizon (rmathrms) is directly proportional to the mass of the black hole (M). More exactly:



rmathrms=frac2GMc2



The black holes whose merger was detected by LIGO would each have been about 90 km in radius, and after merger, a little less than 180km.



Read about the Schwarzchild radius

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