Browsing 08 Faculty of Arts and Sciences by Subject "general relativity"

EMU I-REP

Browsing 08 Faculty of Arts and Sciences by Subject "general relativity"

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  • 2+1-dimensional electrically charged black holes in Einstein - Power Maxwell Theory 
    Gürtuğ, Özay; Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2012)
    A large family of new black hole solutions in 2+1-dimensional Einstein-Power-Maxwell (EPM) gravity with prescribed physical properties is derived. We show with particular examples that according to the power parameter k ...
  • 2+1 dimensional magnetically charged solutions in Einstein - Power - Maxwell theory 
    Mazharimousavi, S. Habib; Gürtuğ, Özay; Halilsoy, Mustafa; Ünver, Özlem (Physical Review D, Springer, 2011)
    We obtain a class of magnetically charged solutions in 2+1 dimensional Einstein - Power - Maxwell theory. In the linear Maxwell limit, such horizonless solutions are known to exist. We show that in 3D geometry, black hole ...
  • 2+1-dimensional traversable wormholes supported by positive energy 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (The European Physical Journal C, Springer, 2015)
    We revisit the shapes of the throats of wormholes, including thin-shell wormholes (TSWs) in 2+1−dimensions. In particular, in the case of TSWs this is done in a flat 2+1−dimensional bulk spacetime by using the standard ...
  • 2+1-dimensional wormhole from a doublet of scalar fields 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physical Review D, American Physical Society, 2015)
    We present a class of exact solutions in the framework of (2+1)-dimensional Einstein gravity coupled minimally to a doublet of scalar fields. Our solution can be interpreted upon the tuning of parameters as an asymptotically ...
  • 3+1 -dimensional thin shell wormhole with deformed throat can be supported by normal matter 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (The European Physical Journal C, Springer, 2015)
    From the physics standpoint the exotic matter problem is a major difficulty in thin shell wormholes (TSWs) with spherical/cylindrical throat topologies. We aim to circumvent this handicap by considering angle dependent ...
  • 5D-Black Hole Solution in Einstein-Yang-Mills-Gauss-Bonnet Theory 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2007)
    By adopting the 5D version of the Wu-Yang Ansatz we present in closed form a black hole solution in the Einstein-Yang-Mills-Gauss-Bonnet (EYMGB) theory. In the EYM limit, we recover the 5D black hole solution already known.
  • Absorption cross-section and decay rate of rotating linear dilaton black holes 
    Sakalli, Izzet; Aslan, Onur Atilla (Astroparticle Physics, Elsevier, 2016)
    We analytically study the scalar perturbation of non-asymptotically flat (NAF) rotating linear dilaton black holes (RLDBHs) in 4-dimensions. We show that both radial and angular wave equations can be solved in terms of the ...
  • Black hole and thin-shell wormhole solutions in Einstein-Hoffman-Born-Infeld theory 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa; Amirabi, Zahra (Physics Letters A, Elsevier, 2009)
    We employ an old field theory model, formulated and discussed by Born, Infeld, Hoffman and Rosen during 1930s. Our method of cutting-gluing of spacetimes resolves the double-valuedness in the displacement vector D(E), ...
  • Black holes and the classical model of a particle in Einstein non-linear electrodynamics theory 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physics Letters B, Elsevier, 2009)
    Modified by a logarithmic term, the non-linear electrodynamics (NED) model of the Born–Infeld (BI) action is reconsidered. Unlike the standard BI action, this choice provides interesting integrals of the Einstein-NED ...
  • Black hole solutions in Einstein–Maxwell–Yang–Mills–Gauss–Bonnet theory 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Journal of Cosmology and Astroparticle Physics, Institute of Physics (IOP) publishing, 2008)
    We consider Maxwell and Yang-Mills (YM) fields together, interacting through gravity both in Einstein and Gauss-Bonnet (GB) theories. For this purpose we choose two different sets of Maxwell and metric ansaetze. In our ...
  • Black hole solutions in f(R) gravity coupled with non-linear Yang-Mills field 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2011)
    It is shown that in the static, spherically symmetric spacetime the problem of metric f(R) gravity coupled with non-linear Yang-Mills (YM) field constructed from the Wu-Yang ansatz as source, can be solved in all dimensions. ...
  • Chaos in electrovac and non-Abelian plane wave spacetimes 
    Sakallı, İzzet; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2006)
    Superposed electrovac pp-waves causes chaos. To show this, we project the particle geodesics onto the (x,y) plane and simulate the phase space’s Poincaré section numerically. Similar considerations apply, with minor ...
  • Chaos in Kundt type III Spacetimes 
    Sakallı, İzzet; Halilsoy, Mustafa (Chinese Physics Letters, Institute of Physics (IOP) Publishing, 2011)
    We consider geodesics motion in a particular Kundt type III spacetime in which Einstein-Yang-Mills equations admit solutions. On a particular surface as constraint we project the geodesics into the (x,y) plane and treat ...
  • Charge screening by thin-shells in a 2+1-dimensional regular black hole 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (European Physical Journal C, Springer, 2013)
    We consider a particular Bardeen black hole in 2+1-dimensions. The black hole is sourced by a radial electric field in non-linear electrodynamics (NED). The solution is obtained anew by the alternative Hamiltonian formalism. ...
  • A Class of Transcendent Solution to Ernst System 
    Halilsoy, Mustafa (Lettere Al Nuovo Cimento, Societa Italiana di Fisica, 1985)
    We present a method that generates a class of transcendent solutions to Ernst system in Einstein-Maxwell theory of general relativity.
  • Colliding EM Shock Waves in General Relativity 
    Halilsoy, Mustafa (Physical Review D, Amrican Physical Society (APS), 1988)
    we derive a new, exact solution for the Einstein-Maxwell equations that describes the collision (interaction) of two arbitrarily polarized electromagnetic shock waves. In the limit that the polarization angle vanishes, ...
  • Colliding Impulsive Waves in Succession 
    Mustafa, Halilsoy (Physical Review -Series d-, American Physical Society (APS), 1990)
    We formulate the initial-value problem for two colliding trains of impulsive gravitational waves. In the absence of a global, exact solution we show that in a region lying between the singularity u'+ U'= 1 and the wave ...
  • Colliding wave solutions from five-dimensional black holes and black pp-branes 
    Halilsoy, Elif; Halilsoy, Mustafa; Ünver, Özlem (Journal of Mathematical Physics, American Institute of Physics (AIP), 2006)
    e consider both the five-dimensional Myers-Perry and Reissner-Nordstrom black holes (BHs) and black pp -branes in (4+p)(4+p) -dimensions. By employing the isometry with the colliding plane waves (CPWs) we generate ...
  • Colliding Wave Solutions in a Symmetric Non-metric Theory 
    Gürtuğ, Özay; Halilsoy, Mustafa (International Journal of Theoretical Physics, Springer, 2009)
    A method is given to generate the non-linear interaction (collision) of linearly polarized gravity coupled torsion waves in a non-metric theory. Explicit examples are given in which strong mutual focussing of gravitational ...
  • Collision of Electromagnetic Shock Waves Coupled with Axion Waves: An Example 
    Halilsoy, Mustafa; Sakallı, İzzet (Classical and Quantum Gravity, Institute of Physics (IOP) Publishing, 2003)
    We present an exact solution that describes collision of electromagnetic shock waves coupled with axion plane waves. The axion has a rather special coupling to the cross polarization term of the metric. The initial data ...