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2021.06.10
Probing stellar initial mass function with CNO isotopes
<p>All measurements of cosmic star formation must assume the stellar initial mass function (IMF) to extrapolate from the star-formation rate (SFR) measured for massive stars to the total SFR. Traditional...</p>
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2021.06.03
1000 days Around the Earth - the Planets discovered by TESS
Since the launch of the Transiting Exoplanet Survey Satellite (TESS) three years ago, the exoplanet field had a new boom of discoveries. In this talk, the speaker will review the main exoplanet result...
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2021.05.27
Discovering other Earths while sustaining our unique home in the Cosmos
Observations show that exoplanets are ubiquitous. For the first time, we have the technological capability to discover planets with similar bulk properties to Earth by monitoring the radial-velocity o...
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2021.05.20
Chaos and the time-reversibility paradox
During the Great Plague of London in 1965, Isaac Newton went for a 2 year quarantene in his home in Woolsthorpe, where he layed down the faundation of his later theories on calculus, optics and the la...
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2021.05.18
Testing General Relativity with black hole X-ray data: recent progress and future developments
The theory of General Relativity has successfully passed a large number of observational tests. The theory has been extensively tested in the weak-field regime with experiments in the Solar System and...
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2021.05.13
Understanding the Structures and Evolutions of Massive Stars Based on 3D Radiation Hydrodynamic Simulations
Massive stars play important roles in many astrophysical systems by providing the radiative and mechanical energy output. They can also produce black holes and neutron stars when they explode. However...
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2021.05.06
Universal Properties of Light Rings for Stationary Axisymmetric Spacetimes
Light rings (LRs) play an important role in gravitational wave observations and black hole photographs. In this paper, we investigate general features of LRs in stationary, axisymmetric, asymptotical...
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2021.04.29
Unravelling Atomic ISM Physics Across the Local Group
Encoded in the atomic ISM is physics crucial to the baryonic cycle, including the formation of molecular clouds and the origin of interstellar turbulence from stellar feedback. Nearby galaxies provide...
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2021.04.22
Recent progress in cosmological collider physics
Heavy particles can be produced on shell during inflation and leave distinct signals in the correlations of density fluctuations. These signals can be searched for in the future CMB/LSS/21cm observati...
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2021.04.16
Galactic Mass and Anisotropy Profile with Halo K-Giant and Blue Horizontal Branch Stars from LAMOST/SDSS and Gaia
A major uncertainty in the determination of the mass profile of the Milky Way using stellar kinematics is the poorly determined anisotropy parameter, beta = 1 - ( ( (sigma_theta)**2 + (sigma_phi)**2 )...
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