Abstract
The paper derives the galaxy evolution by the non-interacting (incompatibility) between dark matter and baryonic matter in terms of the short-range separation between dark matter and baryonic matter, so dark matter cannot contact baryonic matter. In the conventional CDM (cold dark matter) model, dark matter and baryonic matter are interactive (compatible), so dark matter can contact baryonic matter. However, the conventional CDM model fails to account for the failure to detect dark matter by the contact (interaction) between dark matter and baryonic matter, the shortage of small galaxies, the abundance of spiral galaxies, the old age of large galaxies, and the formation of thin spiral galaxies. The non-interacting (incompatible cold dark matter) model can account for these observed phenomena. The five periods of baryonic structure development in the order of increasing non-interacting (incompatibility) are the free baryonic matter, the baryonic droplet, the galaxy, the cluster, and the supercluster periods.
Highlights
The conventional model for galaxy evolution is the CDM model
This paper proposes the modified Newtonian dynamics (MOND) forces in the interface between the baryonic matter region and the dark matter region [9]
Galaxy evolution is derived by the incompatibility between dark matter and baryonic matter in terms of the short-range separation between dark matter and baryonic matter
Summary
The conventional model for galaxy evolution is the CDM (cold dark matter) model. In the CDM model, dark matter and baryonic matter are interactive (compatible), so dark matter can contact baryonic matter. The solutions for the problems listed above are as follows: 1) In the ICDM model, the incompatibility explains the failure to detect dark matter by the contact (interaction) between dark matter and baryonic matter. The first generation galaxies in ICDM model appeared to be small, but the condition to form large galaxies (elliptical, spiral, and irregular) already existed in the surrounding gas without the need of galaxy merger. 3) In the ICDM model, most of spiral galaxies were formed as the first generation galaxies without the need of merger. 4) In the ICDM model, most large galaxies were formed typically as the first generation galaxies, so they are older than small galaxies which were formed typically as the second generation galaxies from the interactions among first generation galaxies.
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