Browsing 08 Faculty of Arts and Sciences by Subject "gravity"

EMU I-REP

Browsing 08 Faculty of Arts and Sciences by Subject "gravity"

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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 ...
  • 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.
  • 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 ...
  • Colliding EM Waves that Admit Separable Wave Equation 
    Halilsoy, Mustafa (General Relativity and Gravitation, Springer, 1994)
    We show that the massive wave equation is separable in two particular colliding Einstein-Maxwell waves space-times. The first is the type D metric of Chandrasekhar and Xanthopoulos whereas the second is the doubly ...
  • Colliding Impulsive Gravitational Waves 
    Yavuz, Nutku; Mustafa, Halilsoy (Physical Review Letters, American Physical Society (APS), 1977)
    We formulate the problem of colliding plane gravitational waves with two polarizations as the harmonic mappings of Riemannian manifolds and construct an exact solution of the vacuum Einstein field equations describing ...
  • Colliding Plane Gravitational Waves 
    Halil, Mustafa (Halilsoy, Mustafa) (Physical Review D, American Physical Society (APS), 1979)
    New exact solutions of the vacuum Einstein field equations are constructed which describe the collision of plane gravitational waves. These solutions generalize those of Szekeres by relaxing the requirement of collinear ...
  • 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 ...
  • Comment On Colliding Plane Gravitational Waves 
    Mustafa, Halilsoy (Physics Letters, 1981)
    It is shown that a theorem proved on colliding plane gravitational waves is not correct.
  • Cross-Polarized Cylindrical Gravitational Waves of Einstein and Rosen 
    Halilsoy, Mustafa (Nuovo Cimento B, Springer, 1988)
    Using Einstein-Rosen's linearly polarized waves as the seed solution, we derive an interesting solution for the Einstein's equations that describes the evolution of such waves with the second polarization.
  • Dark Matter; Modification of F(R) or Wimps Miracle 
    Övgün, Ali (2016-01-08)
  • d-dimensional non-asymptotically flat thin-shell wormholes in Einstein-Yang-Mills-Dilaton gravity 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa; Amirabi, Zahra (Physics Letters A, Elsevier, 2011)
    Thin-shell wormholes in Einstein-Yang-Mills-dilaton (EYMD) gravity are considered. We show that a non-asymptotically flat (NAF) black hole solution of the d-dimensional EYMD theory provides stable thin-shell wormholes which ...
  • Domain-Walls in Einstein-Gauss-Bonnet Bulk 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2010)
    We investigate the dynamics of a d-dimensional domain wall (DW) in a d+1-dimensional Einstein-Gauss-Bonnet (EGB) bulk. Exact effective potential induced by the Gauss-Bonnet (GB) term on the wall is derived. In the absence ...
  • Effect of NUT parameter on the analytic extension of the Cauchy horizon that develop in colliding wave spacetimes 
    Gürtuğ, Özay; Halilsoy, Mustafa (International Journal of Modern Physics A, World Scientific Publishing, 2009)
    The Cauchy horizon forming colliding wave solution due to Chandrasekhar and Xanthopoulos (CX) has been generalized by inclusion of the NUT (Newman - Unti - Tamburino) parameter. This is done by transforming the part of the ...
  • The Effect of Sources on the Inner Horizon of Black Holes 
    Gürtuğ, Özay; Halilsoy, Mustafa (Physical Review D, American Physical Society (APS), 2001)
    A single pulse of null dust and colliding null dust both transform a regular horizon into a spacelike singularity in the space of colliding waves. The local isometry between such space-times and black holes extrapolates ...
  • Einstein-Yang-Mills black hole solution in higher dimensions by the Wu-Yang Ansatz 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physics Letters, Elsevier, 2008)
    By employing the higher dimensional version of the Wu-Yang Ansatz we obtain black hole solutions in the spherically symmetric Einstein-Yang-Mills (EYM) theory. Although these solutions were found recently by other means, ...
  • Generating Static Spherically Symmetric Black-holes in Lovelock Gravity 
    Mazharimousavi, S. Habib; Gürtuğ, Özay; Halilsoy, Mustafa (International Journal of Modern Physics D, World Scientific Publishing, 2009)
    Generalization of a known theorem to generate static, spherically symmetric black-hole solutions in higher dimensional Lovelock gravity is presented. Particular limits, such as Gauss-Bonnet (GB) and/or Einstein-Hilbert ...
  • Higher dimensional thin-shell wormholes in Einstein-Yang-Mills-Gauss-Bonnet gravity 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa; Amirabi, Zahra (Classical and Quantum Gravity, Institute of Physics (IOP) Publishing: Hybrid Open Access - Green Policies in RoMEO, 2011)
    We present thin-shell wormhole solutions in Einstein-Yang-Mills-Gauss-Bonnet (EYMGB) theory in higher dimensions d\geq5. Exact black hole solutions are employed for this purpose where the radius of thin-shell lies outside ...
  • Higher dimensional Yang-Mills black holes in third order Lovelock gravity 
    Mazharimousavi, S. Habib; Halilsoy, Mustafa (Physics Letters B, Elsevier, 2008)
    By employing the higher (N\TEXTsymbol{>}5) dimensional version of the Wu-Yang Ansatz we obtain magnetically charged new black hole solutions in the Einstein-Yang-Mills-Lovelock (EYML) theory with second (α2) and third ...