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            | Please use this identifier to cite or link to this item: http://hdl.handle.net/11129/6459 |  
 
| Title: | The Physics of Non-spherical Compact Objects |  | Authors: | Gürtuğ, Özay (Co-Supervisor) Sakallı, İzzet (Supervisor)
 Mangut, Mert
 Eastern Mediterranean University, Faculty of Arts and Sciences, Dept. of Physics
 |  | Keywords: | Thesis Tez Physics Department
 General relativity (Physics)
 Gravitational fields
 Non-spherical Symmetry
 Ernst Formalism
 Gravitational Lensing
 Gravitational Redshift
 Quantum Singularity Analysis
 |  | Issue Date: | Sep-2023 |  | Publisher: | Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ) |  | 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. |  | 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 . 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
 |  | 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 |  | URI: | http://hdl.handle.net/11129/6459 |  | Appears in Collections: | Theses (Master's and Ph.D) – Physics 
 |  
 
 
 
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