Lecture17 - Big Bang Black Holes No Math Dr Jonathan Asaadi...

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Big Bang, Black Holes, No Math Dr. Jonathan Asaadi Dr. Jonathan Asaadi Dark matter and Galaxies Dark matter and Galaxies Big Bang, Black Holes No Math Topic: Introduction 1
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Big Bang, Black Holes, No Math Special Announcement Tuesday March 19th Guest lecture: Dr. Heather Grant Great ideas in Physics & Mathematics
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History of our Universe
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4 Some Time Passes The Transition From a “Charged” Universe to a “Neutral” Universe
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5 Give this special time in history a name Call this time “Recombination” Terrible Word! Atoms are combining for the first time, not re combining! 5 Big Bang, Black Holes No Math Topic: Evidence for the Big Bang 5
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Can you label this diagram? 1) Label where the big bang took place 2) Label where nuclei formation took place 3) Label where electrons were able to bind to nuclei 4) Label when galaxy formation took place You should be able to do this for the final exam!
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7 A Gravity Dominated Universe The only thing left is gravity! The gravitational attraction between massive things ONLY makes them move towards each other Any single atom would be most attracted to the closest place with lots of mass 7 Big Bang, Black Holes No Math Topic: Large Objects 7
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8 Wait a Half Billion Years As the years go by, mass clumps together By a half a billion years after the bang, most of the mass is in one of a large number of “clumps” Billions of these clumps, each becomes a galaxy! 8 Big Bang, Black Holes No Math Topic: Evidence for the Big Bang 8
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9 Fast Forward… Fast forward 13 billion years Temperature of space is now ~3 degrees Cosmic Background Radiation We get people …(ok, I'm cheating a little...but from a cosmic perspective not a lot interesting goes on) More on Stellar and Galaxy Formation next 9 Big Bang, Black Holes No Math Topic: Evidence for the Big Bang 9
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10 Overview It turns out that the way Galaxies and Stars form is have similarities… start there The way stars die depends on the star itself… sometimes they die to form a Black Hole Black Holes are some of the weirdest things in the Universe… In many ways the formation of Black Holes is like the Big Bang in Reverse This is one of the reasons they are so interesting to study .... 10 Big Bang, Black Holes No Math Topic: Large Objects 10
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11 Big Objects and Black Holes Galaxies and Dark Matter Star Birth and Death Black Hole Formation Properties of Black Holes Today Not to be confused with the death star ....
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Galaxy Formation: Overview Big picture: Dark Matter and what Galaxies “look like” A gravity dominated Universe Allows galaxies to form Stars in Galaxies Dark Matter in Galaxies How do galaxies form?
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