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Physics 200 Black Holes & Dark Matter

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Physics Group

on 15 October 2012

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Transcript of Physics 200 Black Holes & Dark Matter

Black Holes Dark Matter Dark Energy The Universe What's it made of? What is it? WIMPs! Axions How do we know that it's there? Why is dark matter important? Gravitational Lensing Parallel Universes? What is it? Sachs-Wolfe Effect
1. Flat universe
2. inconstancies in density from hills and valley A form of the cosmological constant, filling empty space evenly An energy force controlled by the time and space, density dependent on time and space Expansion of supernovas at an even rate. The Universe is flat, according to the cosmic microwave background anisotropies. In order to maintain flatness, a density must be even Large scale structures show a lack of critical mass, and voids without dark energy Nature of dark matter
- very sparse and reacts only to gravity
-negative pressure, helps expansion of the universe Why is it Important?
1. 73% of the Universe
2. Controls movement of the universe
3.helps explain the cyclic model of the universe Abell 2218 Galaxies? Notice the bendy bits... distorts space and time The presence of mass actually ? ? ? (Weakly Interacting Massive Particles) "cold" dark matter supersymmetric the dark matter enigma Not originally proposed to solve Slightly electromagnetically reactive? dark matter Bad news as a candidate parallel universes Could the extra "mass" be interacting with ours? Early "clumping" of dark matter the universe as it is today may have been crucial in the forming of Star Clusters Galaxies Clusters Filaments Planetary systems Black Holes Stellar Systems YOUCH! 23% 73% Where are Black Holes?
Where do they come from?
How do we see them?
What are the different types?
History What Are Black Holes? History Dark Matter
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