Research
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2023.05.23
Binaries of the first stars as progenitors of compact object mergers
A grand challenge for modern astrophysics is to understand star and galaxy formation in the first billion years of cosmic history. In particular, the first generation of stars born in extremely metal-poor/free primordial gas, the so-called population III (Pop III), are believed to have distinct features compared with present-day stars: They are more likely to become massive black holes due thei...
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2023.05.22
Mysteries of fast radio bursts
Making use of exponential increases in computing power and memory per dollar, radio astronomers have been able to search larger areas of sky with ever higher bandwidth at high time and frequency resolution. In 2007, a mysterious millisecond-duration burst was found around the cellphone band. This kind of signal is now known as fast radio burst (FRB), energetic bursts visible at a cosmological d...
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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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