Gravitational waves and cosmology.

Fier, Jared Robert, 1992-

Gravitational waves and cosmology.

dc.contributor.advisor	Wang, Anzhong.
dc.creator	Fier, Jared Robert, 1992-
dc.creator.orcid	0000-0001-9439-5063
dc.date.accessioned	2021-07-14T14:07:47Z
dc.date.available	2021-07-14T14:07:47Z
dc.date.created	2021-05
dc.date.issued	2021-04-14
dc.date.submitted	May 2021
dc.date.updated	2021-07-14T14:07:48Z
dc.description.abstract	The recent discovery of GW140915 and the confirmation of the existence of gravitational waves (GWs) has garnered the attention of many physicists as they seek to understand their behavior as they travel across the universe. In this dissertation, one will find the study singularities which may arise in plane GWs, and cosmological perturbations may affect GWs as they propagate through an expanding, inhomogeneous universe. It is found that in the BJR coordinates, singularities arise at the focused point u = us, except in the two cases: (i) α = 1/2, ∀ χn, and (ii) α = 1, χi = 0, where χn are the coefficients in the expansion and α is a parameter. When observing GWs produced from remote astrophysical sources, one finds that there are three scales to consider, λ, Lc, and L which denote the typical wavelength of the GW, the scale of the cosmological perturbations, and the size of the observable universe, respectively. The Einstein equations were calculated for GWs on the cosmic scale, and the geometric optics approximation found the gravitational integrated Sachs-Wolfe effects created by both the cosmological scalar and tensor perturbations.
dc.format.mimetype	application/pdf
dc.identifier.uri	https://hdl.handle.net/2104/11465
dc.language.iso	en
dc.rights.accessrights	Worldwide access
dc.subject	General relativity. Cosmology. Gravitational waves.
dc.title	Gravitational waves and cosmology.
dc.type	Thesis
dc.type.material	text
thesis.degree.department	Baylor University. Dept. of Physics.
thesis.degree.grantor	Baylor University
thesis.degree.level	Doctoral
thesis.degree.name	Ph.D.