Spherically symmetric dark energy structures in the context of Chaplygin gas model

dc.contributor.advisorTupper, Gary Ben_ZA
dc.contributor.advisorViollier, Raoul Den_ZA
dc.contributor.authorTekola, Abiy Gen_ZA
dc.date.accessioned2014-08-13T20:03:31Z
dc.date.available2014-08-13T20:03:31Z
dc.date.issued2006en_ZA
dc.descriptionIncludes bibliographical references (leaves 42-43).en_ZA
dc.description.abstractThis paper investigates the existence of spherically symmetrical dark energy structures under the context of Chaplygin gas. A scaling solution of the form r -2/3 is found for the density and then we calculated the corresponding rotational curve and it turns out to be unrealistic implying that such objects don't exist. Finally we modified the equation of state of the Chaplygin gas to an equation of state of the form P = (j 2 P - A and compared p with observational data to see to what physical extent this equation works and it isdetermined that it works as far as a couple of hundred Mpc while the physical length of galaxies is in Kpc. implying the modified Chaplygin equation fits the observed rotational curves.en_ZA
dc.identifier.apacitationTekola, A. G. (2006). <i>Spherically symmetric dark energy structures in the context of Chaplygin gas model</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Physics. Retrieved from http://hdl.handle.net/11427/6518en_ZA
dc.identifier.chicagocitationTekola, Abiy G. <i>"Spherically symmetric dark energy structures in the context of Chaplygin gas model."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Physics, 2006. http://hdl.handle.net/11427/6518en_ZA
dc.identifier.citationTekola, A. 2006. Spherically symmetric dark energy structures in the context of Chaplygin gas model. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Tekola, Abiy G AB - This paper investigates the existence of spherically symmetrical dark energy structures under the context of Chaplygin gas. A scaling solution of the form r -2/3 is found for the density and then we calculated the corresponding rotational curve and it turns out to be unrealistic implying that such objects don't exist. Finally we modified the equation of state of the Chaplygin gas to an equation of state of the form P = (j 2 P - A and compared p with observational data to see to what physical extent this equation works and it isdetermined that it works as far as a couple of hundred Mpc while the physical length of galaxies is in Kpc. implying the modified Chaplygin equation fits the observed rotational curves. DA - 2006 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2006 T1 - Spherically symmetric dark energy structures in the context of Chaplygin gas model TI - Spherically symmetric dark energy structures in the context of Chaplygin gas model UR - http://hdl.handle.net/11427/6518 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/6518
dc.identifier.vancouvercitationTekola AG. Spherically symmetric dark energy structures in the context of Chaplygin gas model. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Physics, 2006 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/6518en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Physicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherPhysicsen_ZA
dc.titleSpherically symmetric dark energy structures in the context of Chaplygin gas modelen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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