The Accelerating Universe

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How Much Matter? Matter density determines the gravitational pull that slows the expansion Deceleration rate measures the density of matter created in the Big Bang. Density only about: 10 -29 gram/cm 3
Extending the Hubble Diagram <strong>The</strong> linear Hubble Law is only an approximation. <strong>The</strong> rate of expansion in the past depends on the matter/energy density of the universe. H 2 (a) H 2 = (a) H 02 = [ HΩ m a -3 + Ω Λ + (1- m - Ω Λ ) a -2 02 [ Ω m a -3 + (1- Ω m ) a -2 ] ] Redshift = velocity Hubble Diagram Look far enough ⇒See deviation from a line Distance between 2 galaxies Size God’s Eye View Distance from Us Time
Page 1 and 2: The Accelerating Universe Peter Gar
Page 3 and 4: The Universe is Expanding! 1929 Edw
Page 5 and 6: Hubble was Wrong (sort of) Hubble
Page 7 and 8: Measuring Distance is Simple but Ha
Page 9 and 10: Supernovae - Maybe Standard Candles
Page 11 and 12: “Explosion” of a Star - Type Ia
Page 13: Type Ib/c removed Original Hubble D
Page 17 and 18: Searching for Supernovae
Page 19 and 20: Distant Hubble Diagram Both groups
Page 21 and 22: Acceleration Universe will look ver
Page 23 and 24: What is the dark energy? Both the m
Page 25 and 26: A Dark, Accelerating Universe 0.1%
Page 27 and 28: Recombination - 14 billion years -
Page 29: Inflation Expanded a small piece of

The Accelerating Universe

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