Research
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2023.02.23
Solar-like Oscillations: Past, Present, & Future
The analysis and interpretation of stellar oscillations ---asteroseismology --- permits direct observational examination of stellar interiors. In particular, low-degree p-modes, excited through the same stochastic convective mechanism as in our Sun, permit us to draw inferences about the global properties, interior structures, rotational dynamics, and evolutionary fates of field stars. Space-ba...
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2023.01.04
Mapping Interstellar Magnetic Field Strength in the Era of FAST, FASTA, and SKA
Magnetic field is one of the most important physical quantities regulating the evolution of interstellar medium and star formation in the Milky Way. Despite enormous surveys using techniques of dust polarization, Faraday rotation, and synchrotron polarization to reveal the magnetic field structure of the Milky Way, none of the techniques can give accurate magnetic field strength. Zeeman effect ...
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2023.01.03
On Modelling Complex Systems in Astronomy
Astronomy today is fundamentally different than it was even just a decade ago. Our increasing ability to collect a large amount of data from ever more powerful instruments has enabled many new opportunities. However, such an opportunity also comes with new challenges. The bottleneck stems from the fact that most astronomical observations are inherently high dimension — from “imaging” the Uni...
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2022.12.30
A New Era of Gravitational Wave Astronomy
In this talk I will discuss promising new opportunities in gravitational wave astronomy as the sensitivity of ground-based gravitational wave detector improves, and when the space-borne detector(s) start their operation. I will use stellar-mass binary black holes, neutron stars and the so-called extreme mass-ratio inspirals as examples of these exciting developments. In the last part of the ta...
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2022.12.29
Cosmology with 3D maps of the Universe
The spatial clustering of large-scale structures (LSS) offers insights into the expansion history of the Universe and the growth of structures, and are foreseen to tackle the mysteries of the dark energy and dark matter. Precise cosmological constraints with clustering measurements require the 3-D positions (2-D angular position and redshift) of numerous tracers, and a large sample volume. To t...
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