Why Quasars are so Awesome | Space Time
Δημοσιεύτηκε στις 25 Ιαν 2017
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Quasars ... the most metal thing in the universe.
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Help translate our videos! https://www.youtube.com/timedtext_cs_...
When
Quasars were first discovered the amount of light pouring out of such a
tiny dot in space seemed impossible. A hysterical flurry of
hypothesizing followed: swarms of neutron stars, alien civilizations
harnessing their entire galaxy’s power, bright, fast-moving objects
being ejected by our own galaxy’s core. But by the 1980’s we were
converging on the most awesome explanation. It goes a little like this:
Take a black hole of millions to billions times the mass of the sun.
Where from? It turns out every decent-sized galaxy has one at its core.
Now drive gas into the galactic core. One way this can happen is when
galaxies merge and grow. That gas descends into the waiting black hole’s
gravitational well and gains incredible speed on the way. It is swept
up in a raging whirlpool around the black hole that we call an accretion
disk, where its energy of motion is turned into heat. The heat-glow of
the accretion disk is so bright that we can see quasars to the ends of
the universe.
Previous Episode:
The Phantom Singularity
https://www.youtube.com/watch?v=-q7Ev...
Written and hosted by Matt O’Dowd
Produced by Rusty Ward
Graphics by Grayson Blackmon
Made by Kornhaber Brown (www.kornhaberbrown.com)
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang
Henry Van Styn
David Nicklas
Giorgio P.
Quasar
Jelle Slaets
Tambe Barsbay
Joel Brinton
Luna IT Solutions
Hypernova
Joe
Chuck Zegar
Craig Peterson
Mahan Kaur
Jordan Young
Ratfeast
Vitaly Kovalenko
John Hofmann
Thanks to our Patreon Gamma Ray Burst Supporters:
Daniel Lyons
Avan & Kyan Griggs
Bernardo Higuera
Jade Bilkey
Kevin Warne
JJ Bagnell
J Rejc
Michael Fischer
Dylan Merida
Amy Jie
Anthony Caridi
Avi Goldfinger
Corey Smeaton
John Pettit
Shannan Catalano
Florian Stinglmayr
Yubo Du
Benoit Pagé-Guitard
Ronny Polonia
Nathan Leniz
Jessica Fraley
Kirk Mathews
Loro Lukic
Carl P. Corliss
Brandon labonte
David Crane
Greg Weiss
David Matteson
Marc Lagarde
Eric Jackson
Will and Sonja Marple
Quasars ... the most metal thing in the universe.
Support us on Patreon at https://www.patreon.com/pbsspacetime
Get your own Space Time tshirt at http://bit.ly/1QlzoBi
Tweet at us! @pbsspacetime
Facebook: facebook.com/pbsspacetime
Email us! pbsspacetime [at] gmail [dot] com
Comment on Reddit: http://www.reddit.com/r/pbsspacetime
Help translate our videos! https://www.youtube.com/timedtext_cs_...
When
Quasars were first discovered the amount of light pouring out of such a
tiny dot in space seemed impossible. A hysterical flurry of
hypothesizing followed: swarms of neutron stars, alien civilizations
harnessing their entire galaxy’s power, bright, fast-moving objects
being ejected by our own galaxy’s core. But by the 1980’s we were
converging on the most awesome explanation. It goes a little like this:
Take a black hole of millions to billions times the mass of the sun.
Where from? It turns out every decent-sized galaxy has one at its core.
Now drive gas into the galactic core. One way this can happen is when
galaxies merge and grow. That gas descends into the waiting black hole’s
gravitational well and gains incredible speed on the way. It is swept
up in a raging whirlpool around the black hole that we call an accretion
disk, where its energy of motion is turned into heat. The heat-glow of
the accretion disk is so bright that we can see quasars to the ends of
the universe.
Previous Episode:
The Phantom Singularity
https://www.youtube.com/watch?v=-q7Ev...
Written and hosted by Matt O’Dowd
Produced by Rusty Ward
Graphics by Grayson Blackmon
Made by Kornhaber Brown (www.kornhaberbrown.com)
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
Big Bang
Henry Van Styn
David Nicklas
Giorgio P.
Quasar
Jelle Slaets
Tambe Barsbay
Joel Brinton
Luna IT Solutions
Hypernova
Joe
Chuck Zegar
Craig Peterson
Mahan Kaur
Jordan Young
Ratfeast
Vitaly Kovalenko
John Hofmann
Thanks to our Patreon Gamma Ray Burst Supporters:
Daniel Lyons
Avan & Kyan Griggs
Bernardo Higuera
Jade Bilkey
Kevin Warne
JJ Bagnell
J Rejc
Michael Fischer
Dylan Merida
Amy Jie
Anthony Caridi
Avi Goldfinger
Corey Smeaton
John Pettit
Shannan Catalano
Florian Stinglmayr
Yubo Du
Benoit Pagé-Guitard
Ronny Polonia
Nathan Leniz
Jessica Fraley
Kirk Mathews
Loro Lukic
Carl P. Corliss
Brandon labonte
David Crane
Greg Weiss
David Matteson
Marc Lagarde
Eric Jackson
Will and Sonja Marple
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