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Science Quickly

Quasar Winds Clock In at a Fifth of Light Speed

Science Quickly

Scientific American

Science

4.41.4K Ratings

🗓️ 28 March 2016

⏱️ 3 minutes

🧾️ Download transcript

Summary

Quasars can shape the evolution of their galaxies, by blasting 135-million-mph winds. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

This is Scientific American's 60 Second Science.

0:04.8

I'm Christopher Intalyata.

0:06.2

Got a minute?

0:07.7

Black holes are not all created equal.

0:09.8

There are the regular star-sized ones,

0:12.2

and then the supermassive black holes,

0:15.0

which really live up to their name.

0:17.0

So the Milky Way has a supermassive black hole

0:20.0

sitting at the center, weighing upwards of 4 million times the mass of the sun.

0:24.8

They're monsters.

0:25.8

Jesse Rogerson, an astrophysicist at York University in Toronto.

0:30.0

Rogerson studies the sites of the most violent, most active, supermassive black holes, quasars.

0:35.7

They are pretty much some of the most extreme things you'll find in the universe.

0:39.2

The black holes at the centers of quasars gobble up massive amounts of gas and dust.

0:43.6

And that heat, that radiation that's created from the falling in,

0:47.9

it actually turns itself into a disk of stuff falling in.

0:51.3

So it's kind of like circling the drain almost and

0:53.8

that accretion disk that's that disk of stuff is so bright it can outshine the

0:58.8

entire galaxy within which it resides. That disk isn't just bright, it's also blazing hot, and that intense heat creates winds.

1:08.1

Think of a massive hair dryer, like the size of our solar system, blowing away galactic gas and debris.

1:14.0

Robertson and his colleagues aimed the Gemini Observatory on one such quasar, called

1:18.6

J.O.230, about 11 billion light years away.

...

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