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Dissertation/Thesis Abstract

Identifying the Quark-Hadron Phase Transition in Neutron Stars with g-Modes
by Barry, Megan Louise, M.S., California State University, Long Beach, 2020, 58; 28028801
Abstract (Summary)

Gravitational waves from neutron star collisions, first detected only a few years ago, serve as a potential discovery tool for new forms of dense matter. We study particular oscillations of neutron star matter driven by chemical gradients, called g-modes, that couple to gravitational waves. Using theoretical models for nuclear and quark matter in a typical neutron star, we compute key physical quantities such as the proton fraction and the local Brunt-Vaisala frequency which determine the global g-mode oscillation frequency. The trends in the g-mode frequency with neutron star mass offer a striking new signal of quark matter in neutron stars. The hope is that future gravitational wave detectors with better sensitivity will be able to find (or rule out) this distinct g-mode signature of quark matter. These results form part of two papers submitted to the Astrophysical Journal that are currently under review.

Indexing (document details)
Advisor: Jaikumar, Prashanth
Commitee: Papp, Zoltan, Ojeda-Aristizabal, Claudia
School: California State University, Long Beach
Department: Physics and Astronomy
School Location: United States -- California
Source: MAI 82/6(E), Masters Abstracts International
Subjects: Astrophysics, Nuclear physics, Aeronomy, Materials science, Atmospheric sciences
Keywords: g-modes, Neutron star, Phase transition, Star collisions, Oscillations, Star matter, Gravitational waves, Astrophysical Journal
Publication Number: 28028801
ISBN: 9798698595021
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