Introduction to Astrophysics

Yale Course , Spring 2007 , Prof. Charles Bailyn

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Overview

Planetary Orbits - Our Solar System and the Pluto Problem - Discovering Exoplanets: Hot Jupiters - Planetary Transits - Microlensing, Astrometry and Other Methods - Direct Imaging of Exoplanets - Introduction to Black Holes - Special and General Relativity - Tests of Relativity - Special and General Relativity - Stellar Mass Black Holes - Pulsars - Supermassive Black Holes - Hubbles Law and the Big Bang - Omega and the End of the Universe - Dark Matter - Dark Energy and the Accelerating Universe and the Big Rip - Supernovae - Other Constraints: The Cosmic Microwave Background - The Multiverse and Theories of Everything

Lecture 14: Pulsars

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        Lecture Details

        FrontiersControversies 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 Einsteins 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. 0000 - Chapter 1. Review of Post-newtonian Effects of General Relativity 0615 - Chapter 2. Gravitational Lensing 2105 - Chapter 3. Jocelyn Bell, Binary Pulsars, and General Relativity 4417 - Chapter 4. Measurement Errors and Testing Strong Field Relativity Complete course materials are available at the Open Yale Courses website httpopen.yale.educourses This course was recorded in Spring 2007.

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