Dissertation/Thesis Abstract

Relativistic Tidal Deformations in Hybrid Stars
by Irving, Bryen, M.S., California State University, Long Beach, 2019, 123; 22588051
Abstract (Summary)

An investigation was conducted on how the tidal properties measured in gravitational waves (GWs) produced by coalescing neutron stars can be utilized to constrain its elusive equation of state (EoS). Realistic EoS models that featured phase transitions to quark matter, governed by the Vector-Interaction-Enhanced BAG (vBAG) model, were employed to simulate behavior that is more consistent with quantum chromodynamics (QCD) calculations. From these models, relations between the effective tidal deformability, Λ ̃, tidal deformability at the Chandrasekhar limit Λ_1.4=Λ(1.4M_⊙ ) and the binary mass ratio q=M_2/M_1 were analyzed to determine if a given EoS, met the criterion determined by the GW170817 signal. With , Λ ̃∈[70,720] for q∈[0.73,1.0] and Λ_1.4∈[70,580]---coupled with the maximum mass condition of M_max∈[2.01,2.16] M_⊙ constraints on the parameter space for our EoS models were placed. It was determined that hybrid configurations cannot easily be ruled out through analyzing the tidal contributions.

Indexing (document details)
Advisor: T Klähn, Thomas
Commitee: Jaikumar, Prashanth, Gredig, Thomas
School: California State University, Long Beach
Department: Physics and Astronomy
School Location: United States -- California
Source: MAI 81/4(E), Masters Abstracts International
Subjects: Astrophysics, Physics, Computational physics
Keywords: Compact Stars, Equation of State, Gravitational Waves, Quantum Chromodynamics, Quark-Hadron Phase Transitions, Tidal Deformability
Publication Number: 22588051
ISBN: 9781687954398
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