The failures of the standard model of cosmology require a new paradigm

Abstract

Cosmological models that invoke warm or cold dark matter can not explain observed regularities in the properties of dwarf galaxies, their highly anisotropic spatial distributions, nor the correlation between observed mass discrepancies and acceleration. These problems with the standard model of cosmology have deep implications, in particular in combination with the observation that the data are excellently described by Modified Newtonian Dynamics (MOND). MOND is a classical dynamics theory which explains the mass discrepancies in galactic systems, and in the universe at large, without invoking dark entities. MOND introduces a new universal constant of nature with the dimensions of acceleration, a0, such that the pre-MONDian dynamics is valid for accelerations a >> a0, and the deep MONDian regime is obtained for a << a0, where space-time scale invariance is invoked. Remaining challenges for MOND are (i) explaining fully the observed mass discrepancies in galaxy clusters, and (ii) the development of a relativistic theory of MOND that will satisfactorily account for cosmology. The universal constant a0 turns out to have an intriguing connection with cosmology: \bar a0 == 2 pi a0 \approx c H_0 \approx c^2(Lambda/3)^{1/2}. This may point to a deep connection between cosmology and internal dynamics of local systems.

International Journal of Modern Physics D, Vol.21, Issue 14, 13 pages, 1 figure, LaTeX, invited raporteur article on Self-Gravitating Systems (chair: David Merritt), 13th Marcel Grossman Meeting, Stockholm; 2012 IJMPD Volume No.21, Issue No. 14

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• Phantom of RAMSES (POR): A new Milgromian dynamics N-body code
• The Vast Polar Structure of the Milky Way Attains New Members
• A Recent Major Merger Tale for the Closest Giant Elliptical Galaxy Centaurus A
• The distribution of galaxy rotation in JWST Advanced Deep Extragalactic Survey
• The formation of early-type galaxies through monolithic collapse of gas clouds in Milgromian gravity
• Methodological Reflections on the MOND/Dark Matter Debate
• Large-Scale Fluctuations in the Number Density of Galaxies in Independent Surveys of Deep Fields
• The large-scale structure of globular clusters in the NGC 1052 group
• An empirical consistent redshift bias: A possible direct reproducible observation of Zwicky's TL theory
• What if the universe expands linearly? A local general relativity to solve the "zero active mass" problem
• Testing CCC+TL Cosmology with Galaxy Rotation Curves
• A simple direct empirical observation of systematic bias of the redshift as a distance indicator
• Evidence for Photometric Contamination in Key Observations of Cepheids in the Benchmark Galaxy IC 1613
• Formation of collisional ring galaxies in Milgromian dynamics
• On the radial acceleration of disk galaxies
• Measuring Mass of Gas in Central Galaxies using weak lensing and satellite kinematics in MOND
• A MOND model applied to the rotation curve of galaxies