The Physics of Non-spherical Compact Objects

EMU I-REP

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dc.contributor.advisor Gürtuğ, Özay (Co-Supervisor)
dc.contributor.advisor Sakallı, İzzet (Supervisor)
dc.contributor.author Mangut, Mert
dc.date.accessioned 2025-07-30T10:43:48Z
dc.date.available 2025-07-30T10:43:48Z
dc.date.issued 2023-09
dc.date.submitted 2023-09
dc.identifier.citation Mangut, 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.uri http://hdl.handle.net/11129/6459
dc.description Doctor 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 Sakallı en_US
dc.description.abstract In 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.abstract ÖZ: 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¸stir en_US
dc.language.iso eng en_US
dc.publisher Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ) en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.subject Thesis Tez en_US
dc.subject Physics Department en_US
dc.subject General relativity (Physics) en_US
dc.subject Gravitational fields en_US
dc.subject Non-spherical Symmetry en_US
dc.subject Ernst Formalism en_US
dc.subject Gravitational Lensing en_US
dc.subject Gravitational Redshift en_US
dc.subject Quantum Singularity Analysis en_US
dc.title The Physics of Non-spherical Compact Objects en_US
dc.type doctoralThesis en_US
dc.contributor.department Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Physics en_US


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