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2020.06.11
Small galaxies, big challenges
Dwarf galaxies play a fundamental role in our understanding of galaxy formation and cosmology. The LCDM has been proven successful in reproducing many observational properties, especially at large sca...
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2020.06.04
The Circumgalactic Medium and Fermi bubbles in the Milky Way
The circumgalactic medium and feedback processes significantly affect galaxy evolution and are an interesting and hot topic in contemporary astronomy. I will talk about our recent work on this topic i...
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2020.05.28
The Biggest Splash
In the Milky Way there exists a significant population of old and metal-rich stars on highly eccentric orbits, most likely born in-situ. It is not 100% clear how this in-situ halo population came abou...
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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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