37 citations · 129 across the 25 of their papers we have counts for
8 papers · 1 filter
Constraining the modified symmetric teleparallel gravity using cosmological data
Shambel Sahlu, Amare Abebe
This paper examines the late-time accelerating Universe and the formation of large-scale structures within the modified symmetric teleparallel gravity framework, specifically using…
Interacting dark energy models
Robert Rugg, Shambel Sahlu, Amare Abebe
This work focuses on two linear interaction models between dark matter and dark energy, which are proposed as key factors in explaining cosmic history, specifically the latetime ac…
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…
Viscous cosmological fluids and large-scale structure
BG Mbewe, RR Mekuria, S Sahlu +1
In this paper, we study the viscous fluid cosmological model that when certain conditions are invoked mimics the CDM model. The background equations governing the evolution of v…
Quintessence phase of the late-time Universe in gravity
Shambel Sahlu, Bhupendra Kumar Shukla, Rishi Kumar Tiwari +2
In this paper, we have studied the late-time accelerating expansion of the Universe using the matter-geometry coupled gravity model, where is the non-metricity sc…
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…