February 27, 2013

Black Hole Spins Near Relativistic Limit

Hamish Johnston, Physics World

Guido Risaliti/NuStar

The best evidence yet that some supermassive black holes (SMBH) rotate at extremely high rates has been found by an international team of astronomers. Made using the recently launched NuStar space telescope, the study suggests that a huge black hole at the centre of a distant galaxy acquired a huge amount of rotational energy as it formed. The discovery could provide important information about how SMBHs and their associated galaxies form and evolve.

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TAGGED: General Relativity, Supermassive Black Holes, Black Holes


October 18, 2013
How Do Supermassive Black Holes Form?
Matthew Francis, Ars Tech.
How do supermassive black holes grow to be millions or billions of times bigger than their more ordinary cousins? No star grows that huge, so they aren't created from the same kinds of supernovae that make stellar-mass black... more ››