6 papers
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…
From colored gravity to electromagnetism
Robert Monjo, Ãlvaro RodrÃguez-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…
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 (…
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…
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…