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Dive into the research topics where Selcuk S. Bayin is active.

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Featured researches published by Selcuk S. Bayin.


The Astrophysical Journal | 1994

A SINGULARITY-FREE COSMOLOGICAL MODEL WITH A CONFORMALLY COUPLED SCALAR FIELD

Selcuk S. Bayin; F. I. Cooperstock; Valerio Faraoni

We explore the possibility of describing our universe with a singularity--free, closed, spatially homogeneous and isotropic cosmological model, using only general relativity and a suitable equation of state which produces an inflationary era. A phase transition to a radiation--dominated era occurs as a consequence of boundary conditions expressing the assumption that the temperature cannot exceed the Planck value. We find that over a broad range of initial conditions, the predicted value of the Hubble parameter is approximately


Astrophysics and Space Science | 1989

Comments on slow rotational perturbations of Robertson-Walker universes

Selcuk S. Bayin

47


Astrophysics and Space Science | 1992

Reply to I. Yavuz, C. Battal, and H. Baysal on slow rotational perturbations of Friedmann universes

Selcuk S. Bayin

km


Physical Review D | 1982

Anisotropic fluid spheres in general relativity

Selcuk S. Bayin

\cdot


The Astrophysical Journal | 1986

Anisotropic fluids and cosmology

Selcuk S. Bayin

~s


The Astrophysical Journal | 1986

Symmetry changes in Friedmann cosmologies

Selcuk S. Bayin

^{-1}\cdot


Astrophysics and Space Science | 2015

Fractional incompressible stars

Selcuk S. Bayin; J. P. Krisch

~Mpc


Archive | 1994

A Singularity-Free Cosmological Model

Selcuk S. Bayin; F. I. Cooperstock; Valerio Faraoni

^{-1}


arXiv: General Relativity and Quantum Cosmology | 2013

Is the Universe Flat

Selcuk S. Bayin

. Inflation is driven by a scalar field, which must be conformally coupled to the curvature if the Einstein equivalence principle has to be satisfied. The form of the scalar field potential is derived, instead of being assumed a priori.


arXiv: General Relativity and Quantum Cosmology | 2008

Friedmann Thermodynamics and the Geometry of the Universe

Selcuk S. Bayin

A mistake in a recent paper by Singh on slow rotational perturbations of Robertson-Walker universes is pointed out.

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Mustafa Özcan

Zonguldak Karaelmas University

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