Black holes growing faster

Print edition : March 08, 2013

The famous early type spiral galaxy the Sombrero (the Mexican hat) galaxy, called so because of its shape, has the black hole that has grown the most. It is estimated that this black hole has been swallowing the equivalent of one sun every 20 years and is now over 500 million times as heavy as the sun. Photo: ESO/P. BarthelAcknowledgments: Mark Neeser (Kapteyn Institute, Groningen) and Richard Hook (ST/ECF, Garching, Ger

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