Results 61 to 70 of about 72,022 (266)
Distinct Acceleration Relations of Galaxies and Galaxy Clusters from Hyperconical Modified Gravity
The Astrophysical JournalGeneral 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 require the assumption of exotic dark matter, especially the cosmic expansion
Robert Monjo, Indranil Banik
doaj +1 more source
Entropy, 2014 A numerical experiment of ideal stochastic motion of a particle subject to conservative forces and Gaussian noise reveals that the path probability depends exponentially on action.
Qiuping A. Wang, Aziz El Kaabouchiu
doaj +1 more source
Testing modified gravity with globular cluster velocity dispersions
, 2008 Globular clusters (GCs) in the Milky Way have characteristic velocity dispersions that are consistent with the predictions of Newtonian gravity, and may be at odds with Modified Newtonian Dynamics (MOND).
Famaey B. +4 more
core +1 more source
Quantum, noncommutative and MOND corrections to the entropic law of gravitation [PDF]
, 2017 Quantum and noncommutative corrections to the Newtonian law of inertia are considered in the general setting of Verlinde’s entropic force postulate. We demonstrate that the form for the modified Newtonian dynamics (MOND) emerges in a classical setting by
Bagchi, B., Fring, A.
core +2 more sources
The Formation of Cosmic Structure with Modified Newtonian Dynamics [PDF]
The Astrophysical Journal, 2001 I consider the growth of inhomogeneities in a low-density baryonic, vacuum energy-dominated universe in the context of modified Newtonian dynamics (MOND). I first write down a two-field Langrangian-based theory of MOND (non-relativistic), which embodies several assumptions such as constancy of the MOND acceleration parameter, association of a MOND ...
openaire +3 more sources
Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance
Advanced Materials Interfaces, EarlyView.Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad +3 more
wiley +1 more source
Newtonian Fractional-Dimension Gravity and the Mass-Dimension Field Equation
UniverseWe resume our analysis of Newtonian Fractional-Dimension Gravity (NFDG), an alternative gravitational model that does not require the dark matter (DM) paradigm.
Gabriele U. Varieschi
doaj +1 more source
On the origin of the inertia: The modified Newtonian dynamics theory [PDF]
Chaos, Solitons & Fractals, 2009 The sameness between the inertial mass and the gravitational mass is an assumption and not a consequence of the equivalent principle is shown. In the context of the Sciama’s inertia theory, the sameness between the inertial mass and the gravitational mass is discussed and a certain condition which must be experimentally satisfied is given. The inertial
openaire +3 more sources
Numerical simulations of Modified Newtonian Dynamics [PDF]
Journal of Physics: Conference Series, 2016 The ΛCDM standard cosmological model is strongly supported by multiple lines of evidence, particularly from observations at large scales such as the CMB and large scale structure. There are some indications, however, of problems at smaller scales. An alternative to the CDM approach is to modify the gravitational force, as exemplified by the MOdified ...
G N Candlish, R Smith, M Fellhauer
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Advanced Materials Technologies, EarlyView.This study explores how machine learning models, trained on small experimental datasets obtained via Phase Doppler Anemometry (PDA), can accurately predict droplet size (D32) in ultrasonic spray coating (USSC). By capturing the influence of ink complexity (solvent, polymer, nanoparticles), power, and flow rate, the model enables precise droplet control
Pieter Verding +5 more
wiley +1 more source