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Dynamical Instability of Neutron Stars in Scalar-Tensor Theories of Gravity

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dc.contributor.advisor Poisson, Eric Podkowka, Dylan 2018-07-27T14:49:59Z 2018-07-27T14:49:59Z 2018-07 2018-07-11 2018-07-27
dc.description.abstract To confirm general relativity (GR) is the correct theory of gravity, even in the strong-field regime, it is necessary to constrain alternative theories using astrophysical observations. A well-studied generalization of GR is scalar-tensor theory (STT), which includes some scalar field nonminimally coupled to the metric. Although STTs have been well-constrained in some cases, using solar system experiments and pulsar timing, other regions of their parameter space remain consistent with these observations, as well as cosmological evolution. I discuss my work to further constrain STT by deducing the macroscopic properties of highly compact neutron stars that correspond with a dynamical instability in the alternative theory, but retain stability in GR. I show the expected compactness for the onset of this instability given a large sample of physically possible equations of state and provide estimates for the mass and radius given current and near-future measurement precision. en_US
dc.language.iso en en_US
dc.rights Attribution 2.5 Canada *
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dc.title Dynamical Instability of Neutron Stars in Scalar-Tensor Theories of Gravity en_US
dc.type Thesis en_US Physics en_US Master of Science en_US Department of Physics en_US
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