Research
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2023.05.18
A Minimalistic View of How Galaxies Live, Breathe, and Die
Despite the diversity in the histories of individual galaxies, most of them live slow and die fast. I will firstly introduce a systematic exploration of the galaxy-halo connection, aiming to search for deviations in the spatial distribution of galaxies from the simplest halo model prediction. The null detection paves the way for us to identify the key driver of galaxy quenching within the same...
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2023.05.17
脉冲星自转减慢和高速中子星：中子超流涡旋体的中微子辐射及其效应
1)首先介绍近年来脉冲星观测的(P-Pdot)图同国际流行的脉冲星自转减慢的磁偶极辐射理论(标准模型)预言的明显矛盾。其次介绍1982年我们提出的中子超流涡旋体的中微子辐射理论模型。2) 在1982年我们的理论基础上,我们提出了这五十年来天文观测发现的高速中子星的物理起源于我们的 “中子超流涡旋体的中微子辐射喷流模型”。Host: Tipei L
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2023.05.16
Quasar Luminosity Function & Single-Epoch Black Hole Mass Estimation
Quasars, luminous extra-galactic sources powered by accreting super-massive black holes (SMBH), have become increasingly important for probing the distant universe due to the growing number of spectroscopically confirmed quasars. My research focuses on exploring the statistical properties and evolution of quasars through careful analysis of their luminosity and black hole mass. In this talk, I ...
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2023.05.12
The Evolution of All Stable Isotopes within Galaxies Across Cosmic Time
In the past decade, Galactic Chemical Evolution (GCE) has flourished due to surveys like Gaia, LAMOST, and Galex, which have enabled detailed investigations of stellar abundances. Stellar nucleosynthesis has also made strides in calculating both stable and radioactive isotopes, including the heavy isotopes produced by rapid neutron-capture (r-process). However, the astrophysical sources of r-p...
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2023.05.11
Physical Mechanisms Regulating Gas Supply to Galaxies
I will first present an overview of the problem of galaxy formation. I will then turn my attention to some important and robust physical mechanisms that regulate the supply of cold gas to galaxies. I will in the end try to convey the message that the field of galaxy formation simulation would benefit by turning to more physics, rather than parameter, based approach, through exploring additional...
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