"Lec 21 - Dark Energy and the Accelerating Universe and the Big Rip" Frontiers/Controversies in Astrophysics (ASTR 160) Class begins with a review of the mysterious nature of dark matter, which accounts for three quarters of the universe. Different models of the universe are graphed. The nature, frequency, and duration of supernovae are then addressed. Professor Bailyn presents data from the Supernova Cosmology Project and pictures of supernovae taken by the Hubble Space Telescope. The discovery of dark energy is revisited and the density of dark energy is calculated. The Big Rip is presented as an alternative hypothesis for the fate of the universe. 00:00 - Chapter 1. Review of Dark Matter 04:51 - Chapter 2. Supernovae 20:53 - Chapter 3. Finding Supernovae: The Supernovae Cosmology Project 34:41 - Chapter 4. The Constant Density of Dark Matter and the Big Rip Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Spring 2007.
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Tags: Big Rip Cepheids Chandrasekhar Limit concordance model dark energy distance modulus Einsteins Cosmological Constant magnitude nova standard bomb Supernova Cosmology Project white dwarf
Uploaded by: yalefrontcont ( Send Message ) on 02-09-2012.
Duration: 45m 48s
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Lec 1- Introduction to Frontiers Controversies in Astrophysics
Lec 3 - Our Solar System and the Pluto Problem
Lec 4 - Discovering Exoplanets: Hot Jupiters
Lec 6 - Microlensing, Astrometry and Other Methods
Lec 7 - Direct Imaging of Exoplanets
Lec 8 - Introduction to Black Holes
Lec 9 - Special and General Relativity
Lec 11 - Special and General Relativity (cont.)
Lec 12 - Stellar Mass Black Holes
Lec 13 - Stellar Mass Black Holes (cont.)
Lec 15 - Supermassive Black Holes
Lec 16 - Hubble's Law and the Big Bang
Lec 17 - Hubble's Law and the Big Bang (cont.)
Lec 18- Hubble's Law and the Big Bang (cont.)
Lec 19 - Omega and the End of the Universe
Lec 23 - Other Constraints: The Cosmic Microwave Background