12 citations · 38 across the 11 of their papers we have counts for
11 papers
Spacetime closedness theorem for homogeneous Lorentzian foliations
Robert Monjo
Motivated by the geometric interpretation of spatially homogeneous cosmological models, we formulate a spacetime closedness theorem directly at the Lorentzian level. A classical sp…
Gas-rich ultra-diffuse galaxies: alleviating the MOND tension with hyperconical modified gravity
Robert Monjo
Gas-rich ultra-diffuse galaxies (UDGs) are an unusually sharp test for gravity models tied to the baryonic Tully--Fisher relation because several systems appear to rotate too slowl…
Weak mixing angle under colored gravity
Robert Monjo
Colored gravity, based on symmetry, emerges naturally in the complexification of Lorentzian manifolds and integrates U(1) electromagnetism as a subcase. This work e…
Galaxy rotation curve in hyperconical universes: a natural relativistic MOND
Robert Monjo
Modified Newtonian dynamics (MOND) and similar proposals can (at least partially) explain the excess rotation of galaxies or the equivalent mass-discrepancy acceleration, without (…
Comparison of HMG and flat rotation velocities inferred from galaxy-galaxy weak lensing
Robert Monjo
Despite the success of dark-matter models, unresolved issues require exploring alternatives such as modified gravity theories. In this context, we examine the compatibility of the…
What if the universe expands linearly? A local general relativity to solve the "zero active mass" problem
Robert Monjo
Modern cosmology presents important challenges such as the \textit{Hubble tension}, \textit{El Gordo's collision} or the \textit{impossible galaxies} (). Slight modificatio…
Hydrostatic equilibrium of X-ray gas in X-COP clusters with HMG
Robert Monjo
Modified Newtonian Dynamics (MOND) was originally proposed to model galaxy rotation curves without dark matter. However, MOND presents difficulties in explaining the Radial Acceler…
Distinct radial acceleration relations of galaxies and galaxy clusters supports hyperconical modified gravity
Robert Monjo, Indranil Banik
General relativity (GR) is the most successful theory of gravity, with great observational support on local scales. However, to keep GR valid over cosmic scales, some phenomena (su…
Geometric interpretation of the dark energy from projected hyperconical universes
Robert Monjo
This letter explores the derivation of dark energy from a locally conformal projection of hyperconical universes. It focuses on the analysis of theoretical compatibility between th…
Study of the observational compatibility of an inhomogeneous cosmology with linear expansion according to SNe Ia
Robert Monjo
Most of current cosmological theories are built combining an isotropic and homogeneous manifold with a scale factor that depends on time. If one supposes a hyperconical universe wi…
From colored gravity to electromagnetism
Robert Monjo, Álvaro Rodríguez-Abella, Rutwig Campoamor-Stursberg
The gauge formalism in \textit{telepalallel gravity} provides an interesting viewpoint to describe interactions according to an anholonomic observer's tetrad basis. Without going i…