Supermassive black hole thrown out of galaxy

By Hardcore Til I Die
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Grand Master

Hardcore Til I Die

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Undergraduate student Marianne Heida of the University of Utrecht has found what appears to be a supermassive black hole leaving its home galaxy at high speed. As part of an international team of astronomers, this extraordinary discovery appears in a paper in the journal Monthly Notices of the Royal Astronomical Society.

For her final year project, Marianne worked at the SRON Netherlands Institute for Space Research, used the Chandra Source Catalog (made using the orbiting Chandra X-ray Observatory) to compare hundreds of thousands of sources of X-rays with the positions of millions of galaxies. Normally each galaxy contains a supermassive black hole at its centre. The material that falls into black holes heats up dramatically on its final journey and often means that black holes are strong X-ray sources.

X-rays are also able to penetrate the dust and gas that obscures the centre of a galaxy, giving astronomers a clear view of the region around the black hole, with the bright source appearing as a starlike point. Looking at one galaxy in the Catalog, Marianne noticed that the point of light was offset from the centre and yet was so bright that it could well be associated with a supermassive black hole.

The black hole appears to be in the process of being expelled from its galaxy at high speed. Given that these objects can have masses equivalent to 1 billion Suns, it takes a special set of conditions to cause this to happen.

Marianne?s newly-discovered object is probably the result of the merger of two smaller black holes. Supercomputer models suggest that the larger black hole that results is shot out away at high speed, depending on the direction and speed in which the two black holes rotate before their collision. In any case, it provides a fascinating insight into the way in which supermassive black holes develop in the centre of galaxies.

Marianne?s research ? which was carried out under the supervision of SRON researcher Peter Jonker - suggests this discovery may be only the tip of the iceberg, with others subject to future confirmation using the Chandra Observatory. She comments: "We have found many more objects in this strange class of X-ray sources. With Chandra we should be able to make the accurate measurements we need to pinpoint them more precisely and identify their nature."

Finding more recoiling black holes will provide a better understanding of the characteristics of black holes before they merge. In future, it might even be possible to observe this process with the planned LISA satellite, an instrument capable of measuring the gravity waves that the two merging black holes emit. Ultimately this information will let scientists know if supermassive black holes in the cores of galaxies really are the result of many lighter black holes merging together.

http://www.ras.org.uk/news-and-press/157-news2010/1814-supermassive-black-hole-is-thrown-out-of-galaxy

Does anyone else think the idea of these things being thrown around at massive speed is slightly terrifying? :p

  • Crisp and Glassed Silver
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Grand Master

Glassed Silver

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http://www.ras.org.u...n-out-of-galaxy

Does anyone else think the idea of these things being thrown around at massive speed is slightly terrifying? :p

Oh God, I had the same thought whilst reading that.

I'm quite nervous imagining such a sucker being flung at us and we can't do shi* about it.

I kinda find the idea of a black hole meeting another one, handshaking and then flying off together kinda cute though. :p

*Angry Birds <puuuuui> sound* :D

Glassed Silver:mac

Grand Master

He's Dead Jim

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Oh God, I had the same thought whilst reading that.

I'm quite nervous imagining such a sucker being flung at us and we can't do shi* about it.

I kinda find the idea of a black hole meeting another one, handshaking and then flying off together kinda cute though. :p

*Angry Birds <puuuuui> sound* :D

Glassed Silver:mac

you old romantic :)

  • Franklin Lee and Glassed Silver
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Grand Master

Hardcore Til I Die

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1) really cool - probably a galaxy with >1 supermassive black hole. This was the smallest & got voted off the island.

2) this thread really needs to be moved to the Science forum.

I didn't realise there was a science forum (although I'm sure I've seen it before), but I agree!

Grand Master

Glassed Silver

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Everything moves even space, didn't you pay attention when Spock helped Scotty figure out the transwarp beaming equation.

Black holes can stay the fu** where they are and back the hell off planet earth thankyouverymuch!

I don't need those monsters flying around the universe messing stuff up and being so matter greedy!

Glassed Silver:ios

Grand Master

threetonesun

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Black holes can stay the fu** where they are and back the hell off planet earth thankyouverymuch!

I don't need those monsters flying around the universe messing stuff up and being so matter greedy!

Glassed Silver:ios

They can't help it, they were born that way!

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