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学术报告(20170626)The Physics and Observations of Pulsar Wind Nebulae
发布时间:2017-06-09

 

报告题目: The Physics and Observations of Pulsar Wind Nebulae
报告人: Dr . Stephen Chi Yung Ng 
报告人单位: 香港大学
报告时间: 2017年6月26日 周一 上午10:00 
报告地点: 东七楼 427会议室
报告人简介:  
  2013- present Assistant Professor, Department of Physics, The Unviersity of Hong Kong
2010-2012   Tomlinson Postdoctoral Fellow, Centre for Research in Astrophysics of Quebec (CRAQ) Postdoctoral Fellow, McGill University
2007-2009  Postdoctoral Fellow, The University of Sydney
报告摘要:  
  A massive star ends its life as a violent supernova explosion, which could produce a compact object known as a pulsar. Pulsars are the most magnetic objects in the Universe. The strong electromagnetic field can rip particles, mostly electrons and positrons, off the stellar surface and accelerate them to high energies. This drives a magnetized outflow known as a pulsar wind. The interaction of the wind with the surrounding medium results in a termination shock, in which the particles are re-accelerated to ultra-relativistic energies and emit broadband synchrotron radiation from radio to X-ray bands. Such a synchrotron bubble is called a pulsar wind nebula (PWN). PWNe are extraordinary laboratories for studying the physics of relativistic shocks and particle acceleration. In this talk, I will give a general overview of PWNe and highlight some recent results from multi-wavelength observations.

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