Spherically symmetric dark energy structures in the context of Chaplygin gas model
dc.contributor.advisor | Tupper, Gary B | en_ZA |
dc.contributor.advisor | Viollier, Raoul D | en_ZA |
dc.contributor.author | Tekola, Abiy G | en_ZA |
dc.date.accessioned | 2014-08-13T20:03:31Z | |
dc.date.available | 2014-08-13T20:03:31Z | |
dc.date.issued | 2006 | en_ZA |
dc.description | Includes bibliographical references (leaves 42-43). | en_ZA |
dc.description.abstract | 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. | en_ZA |
dc.identifier.apacitation | Tekola, 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/11427/6518 | en_ZA |
dc.identifier.chicagocitation | Tekola, 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/11427/6518 | en_ZA |
dc.identifier.citation | Tekola, 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.uri | http://hdl.handle.net/11427/6518 | |
dc.identifier.vancouvercitation | Tekola 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/11427/6518 | en_ZA |
dc.language.iso | eng | en_ZA |
dc.publisher.department | Department of Physics | en_ZA |
dc.publisher.faculty | Faculty of Science | en_ZA |
dc.publisher.institution | University of Cape Town | |
dc.subject.other | Physics | en_ZA |
dc.title | Spherically symmetric dark energy structures in the context of Chaplygin gas model | en_ZA |
dc.type | Master Thesis | |
dc.type.qualificationlevel | Masters | |
dc.type.qualificationname | MSc | en_ZA |
uct.type.filetype | Text | |
uct.type.filetype | Image | |
uct.type.publication | Research | en_ZA |
uct.type.resource | Thesis | en_ZA |
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