ASTR 160 - Frontiers and Controversies in Astrophysics
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). (from oyc.yale.edu)
| Lecture 22 - Supernovae |
| Time | Lecture Chapters |
| [00:00:00] | 1. From Acceleration to Deceleration of Universe Expansion |
| [00:10:20] | 2. The Balance between Dark Energy and Dark Matter |
| [00:18:59] | 3. Complications from Supernovae Brightness and Gravitational Lensing Effects |
| [00:37:33] | 4. The Joint Dark Energy Mission and Large Synoptic Survey Telescope |
| References |
| ASTR 160: Lecture 22 - Supernovae Instructor: Professor Charles Bailyn. Class Notes Lecture 22 [pdf]. Problem Set 8 and Solutions [pdf]. Transcript [html]. Audio [mp3]. Download Video [mov]. |
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