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第14讲-脉冲星

Lecture 14 - Pulsars
课程网址: http://videolectures.net/yaleastr160s07_bailyn_lec14/  
主讲教师: Charles Bailyn
开课单位: 耶鲁大学
开课时间: 2009-11-24
课程语种: 英语
中文简介:
Bailyn教授首先总结了上次引入并解释的广义相对论的四种后牛顿效应:近日点的进动、光的偏转、引力红移和引力波。引力透镜的概念是由爱因斯坦的广义相对论预测的。当来自明亮的远距离光源的光在光源(如类星体)和观测者之间的大质量物体周围弯曲时,可以观察到引力透镜的形成。Bailyn教授随后提供了一张引力透镜的幻灯片。讨论了寻找合适的天文物体以观察后牛顿相对论效应的问题。讲座以乔斯琳·贝尔和脉冲星的发现结束。
课程简介: 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.
关 键 词: 广义相对论; 牛顿效应; 引力透镜
课程来源: 视频讲座网
数据采集: 2023-03-24:chenjy
最后编审: 2023-05-13:chenjy
阅读次数: 34