3 papers
gr-qc2026
Observational Limits on Einasto Dark Matter Parameters from Event Horizon Telescope Images of Sgr A and M87
A. Errehymy, S. Hansraj, C. Hansraj
The Event Horizon Telescope (EHT) has provided images of the supermassive black-holes Sgr A and M87, enabling direct tests of gravity. Any extended mass-distribution, s…
gr-qc2026
Bianchi I spacetimes within 4D Einstein-Gauss-Bonnet scalar field theory
Alex Giacomini, Chevara Hansraj, Genly Leon +1
We investigate the evolution of anisotropies in Bianchi I spacetimes within the framework of the 4D Einstein-Gauss-Bonnet scalar field theory. The field equations are formulated us…
gr-qc2025
Anisotropic Spacetimes in -gravity: Bianchi I, Bianchi III and Kantowski-Sachs Cosmologies
R. Bogadi, A. Giacomini, M. Govender +3
We investigate the evolution of cosmological anisotropies within the framework of -gravity. Specifically, we consider a locally rotationally symmetric geometry in…