37 citations
- North-West UniversityZA10 papers
- Ethiopian Space Science and Technology InstituteET6 papers
- College of Science and Technology - University of RwandaRW4 papers
- National Institute for Theoretical PhysicsZA4 papers
- University of Cape TownZA4 papers
- Universidad de SalamancaES2 papers
- University of OsloNO2 papers
- Addis Ababa UniversityET1 paper
- Dilla UniversityET1 paper
- Imam Mohammad ibn Saud Islamic UniversitySA1 paper
- South African Radio Astronomy ObservatoryZA1 paper
- University of KhartoumSD1 paper
4 papers · 1 filter
Constraints of Cosmic Expansion Using an MSF
Goratamang Gaedie, Shambel Sahlu, Amare Abebe
In this paper, we propose a modified scale factor (MSF) that allows us to explore the accelerating expansion of the universe without invoking the traditional dark-energy model, as…
Constraining viscous fluid models in gravity with data
Shambel Sahlu, Renier T. Hough, Amare Abebe +1
We investigate the impact of bulk viscosity on the accelerating expansion and large-scale structure formation of a Universe in which the underlying gravitational interaction is des…
The cosmology of gravity: constraining the background and perturbed dynamics
Shambel Sahlu, Alnadhief H. A. Alfedeel, Amare Abebe
This paper delves into the late-time accelerated expansion of the universe and the evolution of cosmic structures within the context of a specific \( f(R, L_m) \) gravity model, fo…
Structure growth in cosmology
Shambel Sahlu, Álvaro de la Cruz-Dombriz, Amare Abebe
We take into account redshift-space distortion measurements to investigate the growth of cosmological large-scale structures within the framework of modified symmetric teleparallel…