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Earliest galaxies were powered by 'obese' black holes

发布时间:2017-06-10 08:01:05来源:未知点击:

OBESE black holes, not stars, may have lit up the first galaxies – and could have grown into the earliest supermassive black holes. Black holes usually form from a collapsed star, and then grow by gobbling up material. But how did supermassive ones arise a mere billion years after the big bang? Perhaps they were born “obese”, forming when vast clouds of atomic hydrogen collapsed. Now Bhaskar Agarwal at the Max Planck Institute for Extraterrestrial Physics in Garching, Germany, and colleagues say we could detect the result: galaxies with few stars,