About me

Hello! My name is Huiling Liu(刘会凌). I’m a undergraduate student majoring in Theoretical Physics at University of Science and Technology of China (USTC) . Currently, I am engaged in work related to galaxy formation and evolution in the Prof. Huiyuan Wang (王慧元)’s group.

Here’s my Curriculum Vitae .

Education

Fall 2020-Now

B.S.in Theoretical Physics, USTC
Overall GPA: 3.85/4.30(90.17/100)
Ranking: 36/310 in School of Physical Science, 27/310 in last academic year
Research Supervisor: Prof. Huiyuan Wang (USTC)

Research Experience

Sep2022-Now

Topic: The Duty Cycle of Radio Galaxies.
Credit: First contributor.
Supervisor: Prof. Huiyuan Wang (USTC)
Aims: Understanding the process by which massive galaxies and radio galaxies transform into each other. Investigating the correlation between radio galaxies’ duty-cycle and their properties.
State: Currently being written.
Abstract: Galaxy-galaxy lensing is a powerful measurement technique that provides a direct way to map the distribution of dark matter around galaxies. In this work, We apply galaxy-galaxy lensing on SDSS catalog to constrain the halo parameters of different types of galaxies.

Model ESD

Sep2023-Now

Topic: Halo Ellipticity Measurement in DESI Galaxies via Weak Lensing Analysis
Credit: First contributor.
Supervisor: Prof. Alexie Leauthaud (UCSC)
Aims: Understand the shape and distribution of dark matter halos around galaxies. Providing constraints on the IA(Intrinsic Alignment) model.
State: In prep.
Abstract: In large-scale cosmic surveys, the intrinsic alignment (IA) of galaxies presents a significant source of systematic error in the measurement of cosmic shear, an essential aspect of weak gravitational lensing studies. By accurately measuring the ellipticity of dark matter halos, we can directly constrain the IA model, enhancing the precision in our measurements of cosmological parameters. This work utilizes the Dark Energy Spectroscopic Instrument (DESI) to measure halo ellipticity by meticulously analyze second-order angular term of weak lensing signal.

Collaborate

Sep2023-Now

Topic: UniverseTBD .
Aims: Enhancing Astronomy Through Advanced Large Language Models. Discover more on our website

Research Interest

Galaxy formation and evolution
The physics and evolution of active galactic nuclei
Gravitational lensing
Cosmological simulation
AI x Astronomy
More…

The universe is strong, but life is stronger.¹ As a beginner of astronomy and astrophysics, I am always glad to make the leap into areas that are wider and unfamiliar.

Talks and presentations

Jun2023

Topic: Exploring the role of radio AGN in galaxy evolution
Place: University of Science and Technology of China (USTC), Department of Astronomy, Hefei, China
Abstract: This is a talk on Undergraduate Academic Annual Conference in USTC (Only 2 astro undergraduate students of USTC are eligible to give this presentation). In this talk, I introduce my research on “The Duty Cycle of Radio Galaxies.”

Aug2023

Topic: Exploring the role of radio AGN in galaxy evolution
Place: University of California Santa Cruz, Department of Astronomy, Santa Cruz, US
Abstract: In this talk, I introduce my research on “The Duty Cycle of Radio Galaxies.”

Nov2023

Topic: Probing halo ellipticity through weak gravititional lensing
Place: University of California Santa Cruz, Department of Astronomy, Santa Cruz, US
Abstract: In this talk, I will introduce our latest progress in measuring halo ellipticity. We have upgraded the dsigma package, enabling us to analyze the weak gravitational lensing signal’s second-order angular components to accurately measure halo ellipticity. This enhanced method was tested using mock data. We also applied this enhanced methodology to evaluate the influence of satellite galaxies in the lens sample. In the future, we plan to measure the halo ellipticity of Brightest Cluster Galaxies (BCGs) using data from the Dark Energy Spectroscopic Instrument (DESI). This will provide insights into the intrinsic alignment (IA) model, thereby increasing the accuracy of our cosmological parameter measurements.

Skills

Programing: Python, MATLAB, Mathematica, IDL, java, basic Linux commands, $\LaTeX$
AStro Tech: Galaxy-galaxy Lensing Measurement and ESD(excess surface density) Modeling

Couses

This is my scholastic record , or you can go to this page to see my major courses and grades.

Selected Awards

2022: Outstanding Student Scholarship-Grade 1 (Proportion of prize: 3%)
2021: Outstanding Student Scholarship-Grade 2 (Proportion of prize: 10%)
2021,2022: Scholarship for Talent Program(Class A)
2021: The 3rd Undergraduate Physics Tournament of Anhui Province, 1st Prize (Rank: 2/80)

Teaching Assistant

Fall 2022： Mechanics Lectured by Prof. Yi Wang
Spring 2023：Thermal Physics Lectured by Prof. Hong Zhu

Hobbies

Clubs: Member of Association of Scientific Expedition of USTC
Ameteur of Soccer and Volleyball and Running

Death’s End by Cixin Liu: “Do you think life is nothing but a fragile, thin, soft shell clinging to the surface of this planet?” “Isn’t it?” “Only if you neglect the power of time. If a colony of ants continue to move clods the size of grains of rice they could remove all of Mount Tai in a billion years. As long as you give it enough time, life is stronger than metal and stone, more powerful than typhoons and volcanoes.” ↩︎