Dark matter halo
A dark matter halo , and Dark Halo called, is the hypothetical from dark matter existing halo , all galaxies and galaxies penetrates and surrounds. The beginnings of this theory were the observation and studies of the movement of stars and gas in galaxies. The measured velocity dispersions of the outer regions of elliptical galaxies were higher than expected, which indicated a different type besides the baryonic matter known to us . Assumptions based on this theory assume that 90% of the matter present in the galaxies is in the form of dark matter . The dark matter halo of the Milky Way is distributed as a spherical corona around visible matter . This corona is said to extend over 300,000 light years, about 300 times further than the extent of visible matter.
Created by super WIMPs
Super WIMPs are hypothetical particles that are created when WIMPs decay. They have a very weak interaction , even weaker than that of the WIMPs, since they cannot interact with the weak interaction, but only with gravity . Because super-WIMPs should have moved very quickly in the early universe and the formation of galaxies would only have occurred after their rest, matter would have had very little time to condense, which also affects the density in the center of the dark- Matter halos would have affected.
Individual evidence
- ↑ Erik P. Verlinde: Emergent Gravity and the Dark Universe . In: SciPost Phys. 2, 016 (2017) . November 7, 2016. arxiv : 1611.02269 . doi : 10.21468 / SciPostPhys.2.3.016 .
- ^ The Case Against Dark Matter. In: Natalie Wolchover, QuantaMagazine.org. November 29, 2016, accessed July 24, 2019 .
- ↑ Controversy over dark matter. In: Rainer Kayser, Spectrum of Science Verlagsgesellschaft mbH. June 26, 2012, accessed July 24, 2019 .
- ↑ Dark Matter. In: Dirk Lennarz, Rheinisch-Westfälische Technische Hochschule Aachen. 2010, accessed July 24, 2019 .