| dethalternate | Date: Saturday, 18-July-2015, 9:27 AM | Message # 1 |
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Astronomers have discovered a monster black hole that has grown surprisingly way out of proportion to its ancient galaxy.
The supermassive black hole contains an amazing 10 per cent of its galaxy's overall mass, over 20 times more than usual.
The new findings, reported in the journal Science, contradict existing models about how the growth of supermassive black holes are closely linked to the growth of their host galaxy
"This is really unexpected and was found in a really small survey, so it can't be that rare, unless we're just extraordinarily fortunate," says one of the study's authors, Professor Megan Urry of Yale University in New Haven.
"It's only one result and we shouldn't extrapolate, but if it were true then it would say that black holes grow substantially before the galaxies around them do."
Most if not all galaxies are thought to contain supermassive black holes in their centres.
The international team of reseachers discovered the supermassive black hole in a distant galaxy called CID-947 that formed about 2 billion years after the Big Bang.
The researchers found CID-947 contains a supermassive black hole over 6.9 billion times the mass of our Sun, a tenth of the galaxy's overall mass.
However, most supermassive black holes in the nearby universe seem to consistently have between about 0.2 to 0.5 per cent of the mass of their host galaxies.
Read more/full article/source - http://www.abc.net.au/science/articles/2015/07/10/4269827.htm
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