Particle Physics in the Sky and Astrophysics Underground: Connecting the Universe's Largest and Smallest Scales
Molly E.C. Swanson

TL;DR
This thesis explores how particles serve as astronomical messengers and how the universe can be used as a particle physics laboratory, involving neutrino detection and galaxy survey analysis to connect cosmic scales.
Contribution
It introduces a software upgrade for galaxy survey analysis and presents new insights into galaxy clustering and bias, linking particle physics and cosmology.
Findings
Detection of high energy neutrinos using Super-K detector
Red galaxies exhibit stronger clustering than blue galaxies
Different galaxy types occupy distinct regions in space
Abstract
Particles have tremendous potential as astronomical messengers, and conversely, studying the universe as a whole also teaches us about particle physics. This thesis encompasses both of these research directions. Many models predict a diffuse flux of high energy neutrinos from active galactic nuclei and other astrophysical sources. The "Astrophysics Underground" portion of this thesis describes a search for this neutrino flux performed by looking for very high energy upward-going muons using the Super-K detector. In addition to using particles to do astronomy, we can also use the universe itself as a particle physics lab. The "Particle Physics in the Sky" portion of this thesis focuses on extracting cosmological information from galaxy surveys. To overcome technical challenges faced by the latest galaxy surveys, we produced a comprehensive upgrade to mangle, a software package that…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Galaxies: Formation, Evolution, Phenomena · Dark Matter and Cosmic Phenomena
