[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 …
assuming a differential relation to constrain the Ricci curvature scalar. To this aim, we …
Validation of energy conditions in wormhole geometry within viable f(R) gravity
GC Samanta, N Godani - The European Physical Journal C, 2019 - Springer
In this work, wormholes, tunnel like structures introduced by Morris and Thorne (Am J Phys
56: 395, 1988), are explored within the framework of f (R) gravity. Using the shape function b …
56: 395, 1988), are explored within the framework of f (R) gravity. Using the shape function b …
Nontrivial black hole solutions in gravitational theory
GGL Nashed, S Nojiri - Physical Review D, 2020 - APS
Recent observation shows that general relativity (GR) is not valid in the strong regime. f (R)
gravity, where R is the Ricci scalar, is regarded to be a good candidate able to cure the …
gravity, where R is the Ricci scalar, is regarded to be a good candidate able to cure the …
Static traversable wormholes in f (R, T)= R+ 2αlnT gravity
N Godani, GC Samanta - Chinese Journal of Physics, 2019 - Elsevier
Traversable wormholes, studied by Morris and Thorne [3] in general relativity, are
investigated in this research paper in f (R, T) gravity by introducing a new form of non-linear f …
investigated in this research paper in f (R, T) gravity by introducing a new form of non-linear f …
Normalized additional velocity distribution: Testing the radial profile of dark matter halos and MOND
DC Rodrigues, A Hernandez-Arboleda… - Physics of the Dark …, 2023 - Elsevier
We propose a complementary and fast approach to study galaxy rotation curves directly from
the sample data, instead of individual fits. With this approach, some relevant tests can be …
the sample data, instead of individual fits. With this approach, some relevant tests can be …
Characterization of the K2-38 planetary system-unraveling one of the densest planets known to date
B Toledo-Padrón, C Lovis, AS Mascareño… - Astronomy & …, 2020 - aanda.org
Context. An accurate characterization of the known exoplanet population is key to
understanding the origin and evolution of planetary systems. Determining true planetary …
understanding the origin and evolution of planetary systems. Determining true planetary …
Evidence against cuspy dark matter haloes in large galaxies
We develop and apply new techniques to uncover systematic effects in galaxy rotation
curves (RCs). Considering that an ideal dark matter (DM) profile should yield RCs that have …
curves (RCs). Considering that an ideal dark matter (DM) profile should yield RCs that have …
Cosmological dynamics in R2 gravity with logarithmic trace term
E Elizalde, N Godani, GC Samanta - Physics of the Dark Universe, 2020 - Elsevier
A novel function for modified gravity is proposed, f (R, T)= R+ λ R 2+ 2 β ln (T), with constants
λ and β, scalar curvature R, and the trace of stress energy tensor T, satisfying T= ρ− 3 p> 0 …
λ and β, scalar curvature R, and the trace of stress energy tensor T, satisfying T= ρ− 3 p> 0 …
Study on wormhole geometry with matter in modified gravity
In this work, static traversable wormholes are investigated in R^ 2 R 2 gravity with
logarithmic trace term T, where R denotes the Ricci scalar, and T=-ρ+ p_r+ 2p_t> 0 T=-ρ+ …
logarithmic trace term T, where R denotes the Ricci scalar, and T=-ρ+ p_r+ 2p_t> 0 T=-ρ+ …
Velocity dispersion of dark-matter deficient ultradiffuse galaxies: A case for modified gravity
E Bhatia, S Chakrabarti, S Chakraborty - Physical Review D, 2023 - APS
The line of sight velocity dispersion of the ultradiffuse galaxies (UDGs) NGC1052-DF2 and
NGC1052-DF4 have been reasonably explained only with the baryonic matter, without …
NGC1052-DF4 have been reasonably explained only with the baryonic matter, without …