CV
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Contact Information
| Name | David A. Simon |
| Professional Title | Postdoc at Westlake University |
| david.simon@physics.ox.ac.uk |
Education
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2021 - 2025 Oxford, UK
DPhil
University of Oxford, Wolfson College
Astrophysics
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2020 - 2021 Oxford, UK
MSc
University of Oxford, Pembroke College
Mathematical and Theoretical Physics
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2016 - 2020 Boston, USA
B.A.
Boston University
Physics (with honors) & Mathematics
Experience
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2024 - Present Dynamical Modelling of Galactic Kinematics using Neural Networks
University of Oxford
- Built a convolutional neural network and multi-layer perceptron machine learning model that predicts galaxy kinematics to within 1% accuracy
- Sped up the running time of the architecture over previous models by a factor of 300
- Decreased training set generation time by a factor of 20
- Skills: PyTorch, GPU Cluster, Machine Learning
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2023 - Present Recovering the Line of Sight Velocity Distribution of Early-Type Galaxies
University of Oxford
- Initialized and ran N-body simulations mimicking early-type galaxies using a super computer
- Created mock photometry / integral field observations of the galaxies with realistic noise and systematics
- Developed a set of community standards for measuring galaxy kinematics
- Skills: Statistics, Super Computing, Simulations, Jupyter
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2023 - 2023 Consultant
Oxford Strategy Group
- Studied different data monetization strategies for a major online media company
- Designed, issued, and analyzed a survey that studied customer preferences
- Skills: MS Office, Market Research, Data Monetization
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2021 - 2023 Measuring the Supermassive Black Hole in M87
University of Oxford
- Determined the mass of the supermassive black hole in M87 to be 25% larger than previously believed
- Pioneered a new technique to measure the stellar density of galaxies, revealing a discrepancy with previous assumptions of a factor of 2
- Developed new modeling techniques allowing for realistic dynamical modeling of galaxy kinematics
- Skills: MCMC, Python, Differential Equations, LaTeX
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2020 - 2021 Quasi-Normal Modes and Black Holes
University of Oxford
- Modified existing mathematical methods to study a black hole quasinormal-mode toy model
- Numerically solved and created visualizations of quasinormal modes
- Skills: Mathematica, Data Visualization, Special Functions
Leadership
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2018 - 2020 Undergraduate Learning Assistant
Boston University
- Ran weekly discussion sections with a graduate teaching fellow for 5 undergraduate physics courses
- Wrote weekly discussion worksheets used by ~40 students
- Hosted weekly office hours and end-of-term review sessions
- Conducted and evaluated interviews with learning assistant applicants
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2018 - 2020 Peer Mentor
Boston University
- Mentored 7 physics and mathematics undergraduate students
- Helped students create short- and long-term goals and implemented a plan to achieve them
- Evaluated academic progress and identified new habits and resources that improved performance
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2022 - 2022 Cosmos and Canvas: Using Data Visualization to Explore and Communicate Your Science
Astrophysics Department, University of Oxford
Organized and attended a one-day workshop (December 2022) teaching astrophysicists how to take raw astrophysical observations and colorize them for public outreach and improved visual literacy.
Presentations
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2024 Dynamical Modelling of Galactic Kinematics using Neural Networks (oral)
Machine Learning for Astrophysics 2024 Conference
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2024 Dynamical Modelling of Galactic Kinematics using Neural Networks (invited talk)
Tsinghua University
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2024 Dynamical Modelling of Galactic Kinematics using Neural Networks (invited talk)
Shanghai Astronomical Observatory
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2024 Dynamical Modelling of Galactic Kinematics using Neural Networks (invited talk)
Shanghai Jiaotong University
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2024 Dynamical Modelling of Galactic Kinematics using Neural Networks (invited talk)
Nanjing University
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2023 Revealing the Stellar Center of M87 with Integral Field Spectroscopy: Effects on the Black Hole Mass (oral)
European Astronomical Society Annual Meeting
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2024 Dynamical Modelling of Galactic Kinematics with Neural Networks (poster)
European Astronomical Society Annual Meeting
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2024 Recovering the Line of Sight Velocity Distribution and Mass Distribution in Simulated Early-Type Galaxies (poster)
European Astronomical Society Annual Meeting
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2023 Anchoring Black Hole Relations in the Local Universe: The Case of M87 (poster)
National Astronomy Meeting