Testing general relativity with present and future astrophysical observations

E Berti, E Barausse, V Cardoso… - … and Quantum Gravity, 2015 - iopscience.iop.org
One century after its formulation, Einstein's general relativity (GR) has made remarkable
predictions and turned out to be compatible with all experimental tests. Most of these tests …

Study of embedded class-I fluid spheres in f (R, T) gravity with Karmarkar condition

Z Asghar, MF Shamir, A Usman, A Malik - Chinese Journal of Physics, 2023 - Elsevier
In this article, we explore some emerging properties of the stellar objects in the frame of the f
(R, T) gravity by employing the well-known Karmarkar condition, where R and T represent …

Relativistic Krori‐Barua Compact Stars in f (R, T) f(R,T) Gravity

MF Shamir, Z Asghar, A Malik - Fortschritte der Physik, 2022 - Wiley Online Library
This work aims to investigate the behaviour of compact stars in the background of f (R, T)
f(R,T) theory of gravity. For current work, we consider the Krori‐Barua metric potential ie, ν …

[HTML][HTML] Anisotropic compact stars in f (R) gravity

GGL Nashed, S Capozziello - The European Physical Journal C, 2021 - Springer
We derive a new interior solution for stellar compact objects in\(f\mathcal {(R)}\) gravity
assuming a differential relation to constrain the Ricci curvature scalar. To this aim, we …

[HTML][HTML] A comprehensive discussion for the identification of cracking points in f (R) theories of gravity

A Malik, A Shafaq, T Naz, AH Al-khaldi - The European Physical Journal C, 2023 - Springer
This paper investigates the concept of cracking and overturning to analyze the impact of
local density perturbations on the stability of self-gravitating compact objects in the …

Comprehensive analysis of relativistic embedded class-I exponential compact spheres in f (R, ϕ) gravity via Karmarkar condition

Z Asghar, A Malik, MF Shamir… - … in Theoretical Physics, 2023 - iopscience.iop.org
In this article, we use the prominent Karmarkar condition to investigate some novel features
of astronomical objects in the f (R, ϕ) gravity; R and ϕ represent the Ricci curvature and the …

[HTML][HTML] Development of local density perturbation technique to identify cracking points in f (R, T) gravity

A Malik, A Shafaq, M Koussour, Z Yousaf - The European Physical Journal …, 2023 - Springer
This paper investigate the impacts of local density perturbations on the stability of self-
gravitating compact objects by utilizing cracking technique within the context of f (R, T) …

Maximal neutron star mass and the resolution of the hyperon puzzle in modified gravity

AV Astashenok, S Capozziello, SD Odintsov - Physical Review D, 2014 - APS
The so-called “hyperon puzzle” in the theory of neutron stars is considered in the framework
of modified f (R) gravity. We show that for simple hyperon equations of state, it is possible to …

Stellar structure modeling in Ricci-inverse gravity with Tolman–Kuchowicz spacetime

A Malik, E Meer, Z Asghar, A Ali - Chinese journal of Physics, 2023 - Elsevier
The primary objective of this research is to conduct an extensive investigation of stellar
compact structures within the frame of the newly proposed Ricci-Inverse theory of gravity …

Singularity-free anisotropic strange quintessence stars in theory of gravity

A Malik, A Tariq, SA Mardan, I Noureen - The European Physical Journal …, 2023 - Springer
In this article, we present a detailed model of anisotropic quintessence stars in the
hypothesis of f (R, ϕ, X) gravity, where R is the Ricci scalar, ϕ represents the potential scalar …