Astronomical data have shown that the Galaxy rotation curves are mostly flat in the far
distance of the galactic cores, which could reveal the insufficiency of our knowledge about …

In this paper, we explore the photon region and the shadow of the rotating counterpart of a
static charged Weyl black hole, which has been previously discussed according to null and …

An exact solution is obtained for the gravitational bending of light in static, spherically
symmetric metrics which includes the Schwarzschild–de Sitter spacetime and also the …

We calculate the deflection angle of light from a distant source by a galaxy cluster in Weyl's
conformal gravity. The general method of calculation is first applied to calculate the …

A scale invariant theory of gravity, containing at most two derivatives, requires, in addition to
the Riemannian metric, a scalar field and (or) a gauge field. The gauge field is usualy used …

Extension of a factorization method of nonlinear second order ODE’s with variable coefficients
SciELO - Scientific Electronic Library Online vol.63 número3 Nambu-Goto action and classical …

Abstract Temeli Einstein Genel Görelilik Kuramı'na dayanan ve kozmolojinin standart modeli
olarak kabul gören ΛCDM modele göre evrenin yaklaşık% 68'i karanlık enerjiden,% 27'si ise …

Abstract" This dissertation conducts an in-depth analysis of two higher order systems: the
extended Maxwell-Chern-Simons theory and Weyl gravity. Higher-order theories …

In the present work, we adopt a nonlinear scalar field theory coupled to the gravity sector to
model galactic dark matter. We find analytical solutions for the scalar field considering the …

Weyl's conformal theory of gravity is an extension of Einstein's theory of general relativity
which associates metrics with 1-forms. In the case of locally integrable (closed non-exact) 1 …