New classes of spherically symmetric, inhomogeneous cosmological models

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buir.contributor.authorGürses, Metin
buir.contributor.authorHeydarzade, Yaghoub
dc.citation.epage064048-25en_US
dc.citation.issueNumber6en_US
dc.citation.spage064048-1en_US
dc.citation.volumeNumber100en_US
dc.contributor.authorGürses, Metinen_US
dc.contributor.authorHeydarzade, Yaghouben_US
dc.date.accessioned2020-02-11T06:44:29Z
dc.date.available2020-02-11T06:44:29Z
dc.date.issued2019
dc.departmentDepartment of Mathematicsen_US
dc.description.abstractWe present two classes of inhomogeneous, spherically symmetric solutions of the Einstein-Maxwell-perfect fluid field equations with cosmological constant generalizing the Vaidya-Shah solution. Some special limits of our solution reduce to the known inhomogeneous charged perfect fluid solutions of the Einstein field equations and under some other limits we obtain new charged and uncharged solutions with cosmological constant. Uncharged solutions in particular represent cosmological models where the Universe may undergo a topology change and in between is a mixture of two different Friedmann-Robertson-Walker universes with different spatial curvatures. We show that there exist some spacelike surfaces where the Ricci scalar and pressure of the fluid diverge but the mass density of the fluid distribution remains finite. Such spacelike surfaces are known as (sudden) cosmological singularities. We study the behavior of our new solutions in their general form as the radial distance goes to zero and infinity. Finally, we briefly address the null geodesics and apparent horizons associated with the obtained solutions.en_US
dc.identifier.doi10.1103/PhysRevD.100.064048en_US
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/11693/53248
dc.language.isoEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttps://dx.doi.org/10.1103/PhysRevD.100.064048en_US
dc.source.titlePhysical Review Den_US
dc.subjectGravitationen_US
dc.subjectCosmologyen_US
dc.subjectGeneral relativityen_US
dc.subjectRelativistic aspects of cosmologyen_US
dc.titleNew classes of spherically symmetric, inhomogeneous cosmological modelsen_US
dc.typeArticleen_US
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