Belching Black Hole Proves a Biggie: First Known ‘Middleweight’ Black Hole
July 10, 2012
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ScienceDaily (July 9, 2012) — Observations with CSIRO’s Australia Telescope Compact Array have confirmed that astronomers have found the first known “middleweight” black hole.
Outbursts of super-hot gas observed with a CSIRO radio telescope have clinched the identity of the first known “middleweight” black hole, Science Express reports.
Called HLX-1 (“hyper-luminous X-ray source 1”), the black hole lies in a galaxy called ESO 243-49, about 300 million light-years away.
Before it was found, astronomers had good evidence for only supermassive black holes — ones a million to a billion times the mass of the Sun — and “stellar mass” ones, three to thirty times the mass of the Sun.
“This is the first object that we’re really sure is an intermediate-mass black hole,” said Dr Sean Farrell, an ARC Postdoctoral Fellow at the University of Sydney and a member of the research team, which included astronomers from France, Australia, the UK and the USA.
Read more: http://www.sciencedaily.com/releases/2012/07/120709102720.htm
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