21st Nov 2013
From One Collapsing Star, Two Black Holes Form and Fuse

Black holes—massive objects in space with gravitational forces so strong that not even light can escape them—come in a variety of sizes. On the smaller end of the scale are the stellar-mass black holes that are formed during the deaths of stars. At the larger end are supermassive black holes, which contain up to one billion times the mass of our sun. Over billions of years, small black holes can slowly grow into the supermassive variety by taking on mass from their surroundings and also by merging with other black holes. But this slow process can’t explain the problem of supermassive black holes existing in the early universe—such black holes would have formed less than one billion years after the Big Bang. 
Now new findings by researchers at Caltech may help to test a model that solves this problem.
Read More.

From One Collapsing Star, Two Black Holes Form and Fuse

Black holes—massive objects in space with gravitational forces so strong that not even light can escape them—come in a variety of sizes. On the smaller end of the scale are the stellar-mass black holes that are formed during the deaths of stars. At the larger end are supermassive black holes, which contain up to one billion times the mass of our sun. Over billions of years, small black holes can slowly grow into the supermassive variety by taking on mass from their surroundings and also by merging with other black holes. But this slow process can’t explain the problem of supermassive black holes existing in the early universe—such black holes would have formed less than one billion years after the Big Bang. 

Now new findings by researchers at Caltech may help to test a model that solves this problem.

Read More.

Source: caltech.edu
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