A generalization of Einstein's gravitational theory is discussed in which the spin of matter as
well as its mass plays a dynamical role. The spin of matter couples to a non-Riemannian …

The theory of gravitational lensing is reviewed from a spacetime perspective, without quasi-
Newtonian approximations. More precisely, the review covers all aspects of gravitational …

The cosmological principle (CP)—the notion that the Universe is spatially isotropic and
homogeneous on large scales—underlies a century of progress in cosmology. It is …

We investigate the conditions for the (in) stability of the isotropic pressure condition in
collapsing spherically symmetric, dissipative fluid distributions. It is found that dissipative …

Inspired by the recent conjecture originated from graduated dark energy that the Universe
has recently transitioned from anti–de Sitter vacua to de Sitter vacua, we extend the …

Our current investigation is inherently linked to the observations of gravitational waves from
the GW190814 event which suggests that the source of the signals can be ascribed to a …

Image of a spherical black hole with thin accretion disk ADS Classic is now deprecated. It will
be completely retired in October 2019. This page will automatically redirect to the new ADS …

This investigation aims to explore certain variables which are considered responsible for
generating pressure anisotropy in dynamical spherically symmetric stellar systems against …

This authoritative volume shows how modern dynamical systems theory can help us in
understanding the evolution of cosmological models. It also compares this approach with …

Dynamical systems theory is especially well-suited for determining the possible asymptotic
states (at both early and late times) of cosmological models, particularly when the governing …