"Lec 14 - Pulsars" Frontiers/Controversies in Astrophysics (ASTR 160) Professor Bailyn begins with a summary of the four post-Newtonian effects of general relativity that were introduced and explained last time: precession of the perihelion, the deflection of light, the gravitational redshift, and gravitational waves. The concept of gravitational lensing is discussed as predicted by Einstein's general relativity theory. The formation of a gravitational lens can be observed when light from a bright distant source bends around a massive object between the source (such as a quasar) and the observer. Professor Bailyn then offers a slideshow of gravitational lenses. The issue of finding suitable astronomical objects that lend the opportunity to observe post-Newtonian relativistic effects is addressed. The lecture ends with Jocelyn Bell and the discovery of pulsars. 00:00 - Chapter 1. Review of Post-newtonian Effects of General Relativity 06:15 - Chapter 2. Gravitational Lensing 21:05 - Chapter 3. Jocelyn Bell, Binary Pulsars, and General Relativity 44:17 - Chapter 4. Measurement Errors and Testing Strong Field Relativity 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: Bell Binary Pulsar Einstein cross field relativity general gravitational redshift wave Jocelyn magnetized neutron star periastron perigalacticon perihelion post-Newtonian relativistic effects quasar rotating strong
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Duration: 48m 40s
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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 21 - Dark Energy and the Accelerating Universe and the Big Rip
Lec 23 - Other Constraints: The Cosmic Microwave Background