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Dissertation
Searching for Neutrino Emissions from the Galactic Center Region
Doctor of Philosophy (Ph.D.), Drexel University
Sep 2024
DOI:
https://doi.org/10.17918/00010739
Abstract
The Galactic Center, home to the supermassive black hole Sagittarius A*, has long intrigued astrophysicists due to its dynamic environment and diverse astrophysical objects. High-energy gamma-ray observations by H.E.S.S. suggest sources emitting up to PeV energies, prompting searches for high-energy neutrinos to confirm hadronic acceleration. Recent high-energy neutrino emissions detected by the IceCube Neutrino Observatory from the Galactic Plane have further heightened interest in this region. This thesis presents a specialized neutrino dataset designed for the Galactic Center, optimized to detect softer spectrum sources and confined to a narrow sky region. This dataset, distinct from previous IceCube datasets, aims to achieve an elevated per-steradian event rate for the Galactic Center by excluding data from the rest of the sky, leading to a higher signal rate. This also leads to a higher background rate, therefore, to counter this, a more sensitive, time-dependent single-flare search is employed, targeting the Galactic Center, particularly for flare durations of less than one hour with a power law spectral index of 2.7.
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Details
- Title
- Searching for Neutrino Emissions from the Galactic Center Region
- Creators
- Xinyue Kang
- Contributors
- Naoko Kurahashi Neilson (Advisor)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- x, 53 pages
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- College of Arts and Sciences; Physics; Drexel University
- Other Identifier
- 991021903507804721