Article
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The κ-Model under Test of the Sparc Database
Version 1
: Received: 16 March 2024 / Approved: 18 March 2024 / Online: 21 March 2024 (01:54:38 CET)
A peer-reviewed article of this Preprint also exists.
Pascoli, G. The κ-Model under the Test of the SPARC Database. Universe 2024, 10, 151, doi:10.3390/universe10030151. Pascoli, G. The κ-Model under the Test of the SPARC Database. Universe 2024, 10, 151, doi:10.3390/universe10030151.
Abstract
Our main goal is here to make a comparative analysis between the well-known MOND theory and a more recent model called κ-model. An additional connection, between the κ-model and two other novel MOND-type theories: Newtonian Fractional-Dimension Gravity (NFDG) and Refracted Gravity (RG), is likewise presented. All these models are built to overtake the DM paradigm, or at least to strongly reduce the dark matter content. Whereas they rely on different formalisms, however, all four seem to suggest that the universal parameter, a0, appearing in MOND theory could intrinsically be correlated to either the sole baryonic mean mass density (RG and κ-model) and/or to the dimension of the object under consideration (NFDG and κ-model). We could then confer to the parameter a0 a more flexible status of multiscale parameter, as required to explain the dynamics together in galaxies and in galaxy clusters. Eventually, the conformal gravity theory (CFT) also seems to have some remote link with the κ-model, even though the first one is an extension of general relativity, and the second one is Newtonian in essence. The κ-model has been tested on a small sample of spiral galaxies and in galaxy clusters. Now we test this model on a large sample of galaxies issued from the SPARC database.
Keywords
SPARC database; galaxy; MOND; Newtonian Fractional-Dimension Gravity; Refracted Gravity; κ-model; dark matter
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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