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2020

Xinzhong Er: From gravitational to plasma lensing

發表日期:2020-11-27來源:放大 縮小
國臺學術報告2020 07 /NAOC Colloquium No.07 2020
   
報告題目/Title From gravitational to plasma lensing
報告人/Speaker Prof. Xinzhong Er (Yunnan University)
報告時間/Time Friday 2:30 PM, Nov.27th, 2020
報告地點/Location A601, NAOC & Live Streaming
主持人/Host Dr. Ran Li
   
報告摘要/Abstract  
The gravitational lensing is a widely used probe in study the dark universe. Besides the gravity, the free electrons in the plasma can also cause deflections of the light. Although plasma lensing has a distinct similarity to gravitational lensing, particularly in its mathematical description, plasma lensing introduces additional features, such as wavelength dependence, diverging deflection etc. I will briefly introduce the basic phenomenon of plasma lensing and the lensing effects, such as the magnification and time delay in the plasma lensing. It shows some potential interesting applications in the study of pulsar, FRB as well as the interstellar and intergalactic medium.
   
報告人介紹/Bio:  
Dr. Xinzhong Er got his PhD from Bonn University in 2010, and spent 4 years in NAOC. After that he worked for Euclid project in Observatory of Roma, INAF. He joined SWIFAR, Yunnan University by the end of 2017. His main research interesting is cosmology, in particular using gravitational lensing to study the dark universe. Recently, he also studies the deflections of radio sources by plasma.
   
報告海報/Poster Click to download the poster
演示幻燈片/Slides Click to download the slides
報告視頻/Video Click to watch the video
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