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Tristan Weaver

Tristan Weaver — Graduate Researcher — Graduate Student
Office: 115 Davey Laboratory
Address: 296 Pollock Rd, State College PA 18602
tsw5383@psu.edu
9494688381
Tristan Weaver
Astronomy Gravitational Waves IGC

I am a graduate researcher working in the Jeong Cosmology Group and Radice Numerical Relativity Group. My research interests include cosmology, gravity, large scale structure, and the early universe. I am working on using AthenaK to simulate stimulated emission of gravitational waves in primordial black hole (PBH) binaries to constrain PBHs as a dark matter candidate. I am currently a Stephen B. Brumbach and Verne M. Willaman Distinguished Graduate Fellow. My previous research includes X-ray analysis of AGN Obscuration with the Urry Group at Yale and machine learning classification of galaxy environments with the Nagai Group at Yale and the Aragón-Salamanca Group at the University of Nottingham.

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ORCID: 0009-0008-3529-6223

Publications
  1. Tristan Weaver, Han Aung, Daniel Cornwell, Daisuke Nagai, Alfonso Aragón-Salamanca “Reconstructing Filaments around Galaxy Clusters from Spectroscopic Surveys using Machine Learning.” Research Notes of the American Astronomical Society 7 12 (2023) doi:10.3847/2515-5172/ad148d
About our wordmark
Monica Rincon Ramirez

The IGC wordmark was created by Monica Rincon Ramirez while she was a graduate student at the Institute. Monica enjoys drawing new connections between fundamental theory and observations. Her graduate work included general relativity, loop quantum gravity, and quantum fields in cosmological backgrounds; her thesis focused on effective quantum corrections to gravitational phenomena from spinfoams and applications to cosmology. She received her PhD in 2024.

The wordmark symbolizes the scope of research at the IGC. The base represents quantum gravity, evoking the quantum geometrical picture from spinfoams and loop quantum gravity — approaches studied at the Center for Fundamental Theory. The middle shows galaxies embedded in a smooth surface characteristic of spacetime in general relativity and the larger physical scales studied at the Center for Theoretical and Observational Cosmology. The top curves to an extreme representing a supermassive black hole accompanied by an energetic jet, with a binary black hole pair nearby — the high-energy phenomena studied at the Center for Multimessenger Astrophysics.