The Physics of Non-spherical Compact Objects

dc.contributor.advisorGürtuğ, Özay (Co-Supervisor)
dc.contributor.advisorSakallı, İzzet (Supervisor)
dc.contributor.authorMangut, Mert
dc.date.accessioned2025-07-30T10:43:48Z
dc.date.available2025-07-30T10:43:48Z
dc.date.issued2023-09
dc.date.submitted2023-09
dc.departmentEastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Physicsen_US
dc.descriptionDoctor of Philosophy in Physics. Institute of Graduate Studies and Research. Thesis (Ph.D.) - Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Physics, 2023. Co-Supervisor: Prof. Dr. Özay Gürtuğ and Supervisor: Prof. Dr. İzzet Sakallıen_US
dc.description.abstractIn this thesis, one of the well-known spacetimes named as Zipoy-Voorhees (ZV) or-metric is extended to its charged version via Ernst formalism and is called the charged ZV solution. This spacetime is then further investigated and the relevant geodesic equations, the Newtonian limit, the solution of Maxwell equations and the singularity analysis are all carried out in detail. These steps are later on followed by inspecting the physical properties of the consequent-metric, whose gravitational lensing effect is compared with the one for the stationary ZV solution. In this regard, the effect of deformation parameter on gravitational lensing and redshift is studied. With the help of Chandrasekhar-Xanthopoulos (CX) theorem and Ernst formalism, the charged and stationary version of ZV solution is also obtained. The metric functions of this new solution- which came out to be utterly complicated- are expanded up to the quadrupole terms. As a result, the closed time-like curves are examined. Another important compitation known as the singularity analysis is carried out for the uncharged and charged versions of ZV spacetime on = 2 and = planes. In the end, it has been found that both solutions are quantum regular in s-mode on the = plane for 1 < < 2. Lastly, gravitational lensing analysis is conducted on another well-known spacetime of theoretical physics, Kerr-Newman Anti de Sitter metric, and the effect of rotation on black holes is studied by using observational data from M87 and SgrA .en_US
dc.description.abstractÖZ: Bu tezde literatürde Zipoy-Voorhees (ZV) uzayzamanı veya-metri˘ gi olarak bilinen ve fiziksel yapı parametresi sadece kütle olan küresel olmayan çözüm, Ernst formalizm yardımıyla yüklü hale getirilerek, yüklü ZV uzayzamanı elde edilmi¸stir. Bu yeni uzayzaman üzerinde, jeodezik analizi, Newton limiti, Maxwell denklemlerinin çözümü ve tekillik analizi yapılmı¸stır. Daha sonra ise ilgili uzayzamanın fiziksel özellikleri ara¸stırılarak, bu yeni çözümde kütle-çekimsel mercekleme etkisi stasyoner ZV çözümüyle kar¸sıla¸stırılmı¸stır. Bu ba˘ glamda, ile ifade edilen geometrik deformasyon parametresinin, bahsi geçen fiziksel olay üzerindeki etkisi incelenmi¸stir. Elde edilen yeni yüklü ZV çözümü üzerinde kütleçekimsel kırmızıya kayma olayı da incelenmi¸stir. ZV çözümünün önemli ba¸ska bir sınıfı olan yüklü ve stasyoner ZV sınıfı, literatürde Chandrasekhar-Xanthopoulos (CX) teoremi olarak bilinen teorem kullanılarak, Ernst formalizm yardımıyla türetilmi¸stir. Bu oldukça karı¸sık yeni çözümün metrik fonksiyonları, kuadrapol terimlere kadar açılarak bu çözümün kapalı zamansal jeodezik denklemleri incelenmi¸stir. Bir ba¸ska önemli analiz olan kuantum tekillik analizi, ZV ve yüklü ZV uzayzamanlarında = 2 ve = düzlemlerinde yapılarak, her iki çözümün de = düzleminde 1 < <2 aralı˘ gında, s-dalga modunda kuantumsal olarak düzenli oldu˘ gu bulunmu¸stur. Son olarak, teorik fizi˘ gin tanınmı¸s bir ba¸ska uzayzamanı olarak bilinen, küresel olmayan ve kara deliklere uygulanabilen Kerr-Newman Anti de Sitter metri˘ ginde, kütleçekimsel mercekleme analizi yapılarak, dönmenin mercekleme üzerindeki etkisi; M87 ve SgrA kara deliklerinin gözlemsel verileri kullanılarak incelenmi¸stiren_US
dc.identifier.citationMangut, Mert. (2023). The Physics of Non-spherical Compact Objects. Thesis (M.S.), Eastern Mediterranean University, Institute of Graduate Studies and Research, Dept. of Physics, Famagusta: North Cyprus.en_US
dc.identifier.urihttps://hdl.handle.net/11129/6459
dc.language.isoen
dc.publisherEastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ)en_US
dc.relation.publicationcategoryTez
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectThesis Tezen_US
dc.subjectPhysics Departmenten_US
dc.subjectGeneral relativity (Physics)en_US
dc.subjectGravitational fieldsen_US
dc.subjectNon-spherical Symmetryen_US
dc.subjectErnst Formalismen_US
dc.subjectGravitational Lensingen_US
dc.subjectGravitational Redshiften_US
dc.subjectQuantum Singularity Analysisen_US
dc.titleThe Physics of Non-spherical Compact Objectsen_US
dc.typeDoctoral Thesis

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