Browsing Department of Physics by Author "Sakallı, İzzet"

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Browsing Department of Physics by Author "Sakallı, İzzet"

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  • Hawking Radiation of Warped Anti de Sitter and Rotating Hairy Black Holes with Scalar Hair 
    Gürsel, Huriye (Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2015-09)
    This thesis mainly focuses on the Hawking radiation (HR) evacuating from the surface of the objects that have earned a reputation as the most extraordinary objects existing so far; the black holes (BHs). Throughout this ...
  • New Singular and Nonsingular Colliding Wave Solutions in Einstein - Maxwell - Scalar Theory 
    Gürtuğ, Özay; Halilsoy, Mustafa; Sakallı, İzzet (General Relativity and Gravitation, 2003)
    A technique is given to generate coupled scalar field solutions in colliding Einstein - Maxwell (EM) waves. By employing the Bell - Szekeres solution as seed and depending on the chosen scalar field it is possible to ...
  • A particular thin-shell wormhole 
    Sakallı, İzzet; Övgün, Ali (Springer, 2017-02-09)
    Using a black hole with scalar hair, we construct a scalar thin-shell wormhole (TSW) in 2+1 dimensions by applying the Visser cut and paste technique. The surface stress, which is concentrated at the wormhole throat, is ...
  • Quantization of Euclidean Black Holes via the Adiabatic Invariance Method 
    Uğural, Esen (Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2016)
    In this thesis, we calculate the entropy of four different types of black holes and show that entropy and area of the considered black holes are equally likely quantized. The quantization of entropy/area of the black holes ...
  • Quantization of Higher Dimensional Linear Dilaton Black Hole Area/Entropy From Quasinormal Modes 
    Sakallı, İzzet (International Journal of Modern Physics A, World Scientific Publishing, 2013)
    The quantum spectra of area and entropy of higher dimensional linear dilaton black holes in various theories via the quasinormal modes method are studied. It is shown that quasinormal modes of these black holes can reveal ...
  • Quantization of rotating linear dilaton black holes 
    Sakallı, İzzet (European Physical Journal C, Springer, 2015)
    In this paper, we focus on the quantization of 4−dimensional rotating linear dilaton black hole (RLDBH) spacetime describing an action, which emerges in the Einstein-Maxwell-Dilaton-Axion (EMDA) theory. RLDBH spacetime has ...
  • Quantum tunneling of massive spin-1 particles from non-stationary metrics 
    Sakallı, İzzet; Övgün, Ali (General Relativity and Gravitation, Springer, 2015-11-15)
    We focus on the HR of massive vector (spin-1) particles tunneling from Schwarzschild BH expressed in the Kruskal–Szekeres and dynamic Lemaitre coordinates. Using the Proca equation together with the Hamilton–Jacobi and ...
  • Quasinormal modes of charged dilaton black holes and their entropy spectra 
    Sakallı, İzzet (Modern Physics Letters A, World Scientific Publishing, 2013)
    In this study, we employ the scalar perturbations of the charged dilaton black hole (CDBH) found by Chan, Horne and Mann (CHM), and described with an action which emerges in the low-energy limit of the string theory. A ...
  • Resonance Spectra of Caged Stringy Black Hole and Its Spectroscopy 
    Sakallı, İzzet; Tokgöz, Gülnihal (Hindawi Publishing Corporation, 2015)
    Maggiore’s method (MM), which evaluates the transition frequency that appears in the adiabatic invariant from the highly damped quasinormal mode (QNM) frequencies, is used to investigate the entropy/area spectra of the ...
  • Scalar Clouds and Quasinormal Modes 
    Tokgöz, Gülnihal (Eastern Mediterranean University (EMU) - Doğu Akdeniz Üniversitesi (DAÜ), 2019-01)
    In this thesis, Maggiore’s method (MM), which evaluates the transition frequency that appears in the adiabatic invariant from the highly damped quasinormal mode frequencies (QNMFs), is used to investigate the entropy and ...
  • Solution of the Dirac equation in the rotating Bertotti-Robinson spacetime 
    Al-Badawi, Ahmad; Sakallı, İzzet (Journal of Mathematical Physics, American Institute of Physics (AIP), 2008)
    The Dirac equation is solved in the rotating Bertotti-Robinson spacetime. The set of equations representing the Dirac equation in the Newman-Penrose formalism is decoupled into an axial and angular part. The axial equation, ...
  • Spectroscopy of Rindler Modified Schwarzschild Black Hole 
    Sakallı, İzzet; Mirekhtiary, Seyedeh Fatemeh (Astrophysics and Space Science, Springer, 2014)
    We study quasinormal modes (QNMs) of uncharged Grumiller black hole (GBH). This massive BH has a Rindler acceleration a, and hence it is also called Rindler modified Schwarzschild BH. After reducing the radial equation of ...
  • Tunnelling of vector particles from Lorentzian wormholes in 3+1 dimensions 
    Sakallı, İzzet; Övgün, Ali (THE EUROPEAN PHYSICAL JOURNAL PLUS, Springer, 2015-06-11)
    In this article, we consider the Hawking radiation (HR) of vector (massive spin-1) particles from the traversable Lorentzian wormholes (TLWH) in 3+1 dimensions. We start by providing the Proca equations for the TLWH. ...
  • Uninformed Hawking radiation 
    Sakallı, İzzet; Övgün, Ali (EPL, IOP Publishing (Institute of Physics), 2015-04-24)
    We show in detail that the Parikh-Wilczek tunneling method (PWTM), which was designed for resolving the information loss problem in Hawking radiation (HR) fails whenever the radiation occurs from an isothermal process. ...