科学研究
-
2024.04.26
Research on the Structure, Chemistry and Kinematics of the Milky Way Based on the Large-scale Sky Surveys
With the advent of massive large-scale sky surveys, such as, the SDSS for photometry, the LAMOST for spectroscopy, and Gaia for astrometry, we are entering a golden era of Galactic studies and precise multi-dimensional information (e.g., 3D position, 3D velocity, chemical element abundance ratios, and stellar age) is now available for some huge samples of stars in the Milky Way. Leveraging thes...
详情 -
2024.04.25
Recent developments in the theory of planet migration
The migration of planets, through the exchange of angular momentum with the protoplanetary discs in which they form, is likely to be important during planet formation. Evidence for migration is provided by systems of multiple exoplanets in which the planets are in mean motion resonances, and by the orbital configurations of circumbinary planets. However, attempts to reproduce the known populati...
详情 -
2024.04.24
Evolutionary Mechanisms in nearby galaxies: Insights from Statistical Analysis of Observations and Cosmological Simulations
Galaxies are complex systems influenced by numerous factors. Despite extensive research, we cannot yet explain the diverse properties of nearby galaxies. Gas accretion, environments, galaxy merging, and supermassive black hole (SMBH) feedback play pivotal roles in galaxy evolution. In this talk, I will present an overview of my recent and current research. My work entails a comprehensive compar...
详情 -
2024.04.23
Gas Accretion and AGN Feedback in the Late Stage Evolution of Massive Ellipticals
Observations indicate that massive elliptical galaxies in the contemporary universe exhibit both low star formation rates and low AGN luminosity. This raises a question: Given continuous gas accretion, how do these massive ellipticals maintain their quiescent state? SMBH feedback is a widely accepted solution to this issue, yet the mechanisms how it prevents gas accretion and subsequent star fo...
详情 -
2024.04.19
SgrA∗ spin and mass estimates through the detection of an extremely large mass-ratio inspiral
Estimating the spin of SgrA∗ is one of the current challenges we face in understanding the center of our Galaxy. In the present work, we show that detecting the gravitational waves (GWs) emitted by a brown dwarf inspiraling around SgrA∗ will allow us to measure the mass and the spin of SgrA∗ with unprecedented accuracy. Such systems are known as extremely large mass-ratio inspirals (XMRIs) a...
详情