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Frontiers and Controversies in Astrophysics - Lecture 22

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Lecture 22 - Supernovae

Professor Bailyn offers a review of what is known so far about the expansion of the universe from observing galaxies, supernovae, and other celestial phenomena. The rate of the expansion of the universe is discussed along with the Big Rip theory and the balance of dark energy and dark matter in the universe over time. The point at which the universe shifts from accelerating to decelerating is examined. Worries related to the brightness of high redshift supernovae and the effects of gravitational lensing are explained. The lecture also describes current project designs for detecting supernovae at high or intermediate redshift, such as the Joint Dark Energy Mission (JDEM) and Large Synoptic Survey Telescope (LSST).

Prof. Charles Bailyn
ASTR 160 - Frontiers and Controversies in Astrophysics, Spring 2007
(Yale University: Open Yale)
Date accessed: 2009-05-12
License: Creative Commons BY-NC-SA

Lecture Material

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Supplementary lecture material is listed below.

1. Problem Set 8
2. Problem Set 8 Solutions



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