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A middleweight black hole is hiding at the center of a giant star cluster - Science Daily

Date: February 8, 2017; Source: Harvard-Smithsonian Center for Astrophysics; Summary: All known black holes fall into two categories: small, stellar-mass black holes weighing a few suns, and supermassive black holes weighing millions or billions of suns.and more »

'Middleweight' black hole discovered in world-first, Queensland scientist says - ABC Online

A Queensland scientist has played a vital role in the world-first discovery of a "middleweight" black hole in space, spending 40 years searching the universe to find it. University of Queensland astronomer Associate Professor Holger Baumgardt said it ...and more »

Astronomers find evidence of 'missing link' black hole - UQ News

A handful of pulsars at the centre of 47 Tucanae whips around an invisible object with a strong gravitational tug. Image: Bülent Kızıltan and Elif Mokran. 9 February 2017. An international team of astronomers today announced new evidence for the ...and more »

Hidden Black Hole in Globular Cluster May Be a Cosmic Middle Child -

For decades, astronomers have tracked black holes with masses millions of times that of the sun, as well as those with tens of solar masses. But black holes between those two extremes have proved elusive. Now, astronomers studying a globular cluster ...and more »

Best Evidence Yet for an Intermediate-Mass Black Hole - Sky & Telescope

An intermediate-mass black hole might be lurking within a dense stellar cluster — a discovery that could point toward how these oddities form. Computer generated image of a black hole causing distortions in the surrounding light. Alain Riazuelo.and more »

Astronomers Identify a New Class of Black Holes - Discover Magazine (blog)

Some black holes are small. Some black holes are giant. But oddly enough, in the cosmic fight between innocent passing stars and voracious black holes, scientists have never found a mid-sized black hole. Until now. The star cluster 47 Tucanae, located ...and more »

Scientists discover new kind of black hole -

Black holes are not necessarily as big – or as small – as astronomers thought, a team of international researchers has discovered. Evidence has emerged of a so-called "middleweight" black hole, the first of its mass known to science, about 13,000 light ...and more »

Rare mid-weight black hole found at heart of bright star cluster - New Scientist

By Ken Croswell. We've caught another glimpse of a shy cosmic monster. Middle-weight black holes are elusive, but our best evidence of one so far comes from inside one of the Milky Way's brightest star clusters – and its existence suggests similar ...and more »

Scientists Find Black Hole Hiding Quietly in a Stellar Hot Mess - Inverse

If you're a black hole, you're either a really small hole or a supermassive monster one — there's nothing in between. At least that's what astronomers observed since there was no proof of middleweight black holes — until now. Now, in a study to be ...and more »

The One Kind of Black Hole Astronomers Can't Pin Down - The Atlantic

Like ​The Atlantic? Subscribe to ​The Atlantic Daily​, our free weekday email newsletter. When it comes to size, nearly all the known black holes in the universe fall into two categories: They're big, or they're really, really big. Stellar mass black ...and more »