Research Seminars @ Illinois

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Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

To have your events added or removed from this calendar, please contact OUR at ugresearch@illinois.edu

Astrophysics, Relativity, and Cosmology Seminar - Chloe Richards and Aaron Ouellette (UIUC, 2023 ICASU Fellows) Aaron O. "Cross-correlating IceCube neutrinos with a large set of galaxy samples around redshift z ~ 1"

Event Type: Seminar/Symposium
Sponsor: Department of Physics
Location: Loomis 464
Virtual: Join online
Date: Apr 24, 2024 12:00 pm
Speaker: Chloe Richards and Aaron Ouellette
Contact: Deanna Frye
E-Mail: ddebord@illinois.edu
Views: 117
Originating Calendar: Physics - Astrophysics, Relativity, and Cosmology Seminar; Aaron O. - The IceCube neutrino telescope has detected a diffuse flux of high-energy astrophysical neutrinos, but the sources of this flux have largely remained elusive. Using the 10-year IceCube public dataset, we search for correlations between neutrino events and tracers of large-scale structure (LSS). We conduct a combined cross-correlation analysis using several all-sky galaxy catalogs spanning a broad redshift range and maps of the cosmic infrared background. We do not detect a definitive signal, but find tantalizing hints of a potential positive correlation between neutrinos and the tracers of LSS. We additionally construct a simple model to interpret the galaxy-neutrino cross-correlations in terms of the redshift distribution of neutrino sources. We put upper limits on the clustering amplitude of neutrinos based on the measured cross-correlations with galaxies and forecast the improvements on these constraints that can be obtained using future detectors. We show that, in the future, neutrino-galaxy cross-correlations should be a powerful probe to constrain properties of neutrino source populations.

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