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2020.05.21
The quasi-equilibrium structure of dark matter halos: from theory to observation
Dark matter halos are approximately virialized condensation of dark matter and serve as the building blocks of large scale structure and galaxy formation. These structures, however, are not fully in e...
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2020.05.07
From halo to intergalactic medium: directly constraining the properties of large-scale gas around high-redshift quasars
At high redshift most of the baryons reside outside galaxies, in an intricated network of sheets, filaments and knots, also known as the Cosmic Web. The direct detection of this large-scale gas struct...
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2020.04.23
Generation of solar spicules and subsequent coronal heating
Spicules are rapidly evolving fine-scale jets of magnetized plasma in the solar chromosphere. It remains unclear how these prevalent jets originate from the solar surface and what role they play in he...
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2020.04.16
Revealing the galaxy intrinsic alignment with self-calibration
The galaxy intrinsic alignment (IA) is both a major source of systematic errors in weak lensing cosmology, and an emerging tracer of the large scale structure of the Universe. Separating IA from weak ...
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2020.04.09
Environmental dependence of galactic properties traced by Lyα forest absorption
The link between the intergalactic medium (IGM) and galaxies is a key to understand the evolution of baryonic matter and galaxies. Although several observations have identified the presence of IGM-gal...
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2020.04.02
Planetary Nebulae as Probes of Stellar and Galactic Evolution
Planetary nebulae (PNe) are descendants of the low- and intermediate-mass stars (about 1-8 solar masses), which account for the absolute majority (>90%) of stellar populations in the universe. As an ...
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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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