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2020.03.26
Studying the Expansion of the Universe with quasar spectra
From 2009 to 2014, the Baryon Oscillation Spectroscopic Survey (BOSS) used the SDSS telescope to obtain spectra of 1.5 million galaxies to get very accurate measurements of the Baryon Acoustic Oscilla...
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2020.03.19
Chasing the most distant objects
Searching for the most distant objects is important. Due to the limited time before the observed epoch, these objects can put the most stringent constraint on the structure formation in the Universe. ...
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2020.03.12
New Methods for Cosmic Large-Scale Structure Analysis
I will introduce several new LSS analysis methods that we are working on. 1) The tomographic Alcock-Paczynski method, which overcomes the RSDs via looking at the redshift evolution, and is capable of ...
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2020.03.05
The Origin of Cosmic Rays
It has been more than one century since the discovery of cosmic rays in 1912. The origin of these energetic particles is still a matter of debate. Great advances have been achieved on cosmic ray measu...
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2020.02.27
Searching for particle nature of dark matter
From rotation curves to the large scale structure, the evidences of the existence of dark matter appear in various scale of our universe. But its particle physics natures are still mysterious to us. P...
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2020.01.09
Massive Spectroscopic Surveys & Fibre Positioner Robots
I will first motivate the need to conduct massive spectroscopic surveys to learn about the 3D distribution of galaxies. From these measurements we can then derive important parameter on the distributi...
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2020.01.03
TBA
Host: Prof. Zheng Cai
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