"A long-term Hubble Space Telescope study of the Draco dwarf galaxy’s stars suggests dark matter is concentrated at the galaxy’s center, supporting the density cusp theory. This finding challenges earlier observations and improves our understanding of dark matter’s role in galaxy formation. (Artist’s concept.) Credit: SciTechDaily.com" (ScitechDaily, Hubble Unmasks Universe’s “Invisible Glue” – Stellar Motions Reveal Dark Matter Secrets)
Dark matter is a gravitational phenomenon, "cosmic glue" whose origin is unknown. The dark matter or dark gravitational interaction is the second dominating effect in the universe. And we know that gravity is the thing, that glues dark matter to visible material. In some theories, dark matter is the thing, that is involved in all material.
The idea is that the expansion of the universe causes the expansion of atoms' quantum fields. That thing makes the quantum-level low pressure in atoms and subatomic particles. The expansion creates a shadow or small quantum low pressure behind the superstrings, that form the particle.
When we think the dark matter it's possible that matter turns "dark" when it releases its energy faster than otherwise. That thing can happen at the edge of the universe. When energy level decreases faster than in other universes, that causes the effect, where material aging faster. So, maybe we can spread this model to the space that is near galaxies. At the edge of the galaxy, the temperature of the material changes very sharply. This can partially explain why researchers can't see dark matter.
It's possible, that weakly interacting massive particles, WIMP can send energy mainly in some other form than infrared, IR frequency. That means there is a possibility, that WIMP sends only gravity waves. Or, it can send mainly other types of radiation than IR radiation.
If WIMP sends only radio, or gamma-rays we cannot see that thing using the IR sensor. The WIMP can send mainly gamma, gravitational, or radio waves. And that means, it can have the ability to transform radiation that hits it to another frequency.
The idea is that when WIMP whose energy is in a different form than heat is near strong IR objects, the strong IR object can cover the WIMP. In this model, the size of the WIMP is so small or so large, that it releases its energy in the form of radio- or some other "cold radiation". If WIMP releases its energy mainly in the form of gamma- or radio waves or it releases pure gravity radiation other bright objects like black holes can cover that material's existence. Especially if those WIMP particles are packed near galaxies or quasars. The WIMP interacts through gravity. Which means that those particles are also near gravity centers.
In the tame way, when a particle travels out from the galaxy energy travels out of it faster. That can cause a suddenly forming gravitational effect, that is stronger than it should. If dark matter is a phenomenon that is visible in the border zones where the energy level between spaces decreases very fast, that explains some part of dark matter. A galaxy and its halo are very high-energy targets it's hard to see lower energy particles around it.
The fact is, around the atom are multiple different quantum fields. When those quantum fields expand because of the expansion of the universe there is forming an electromagnetic low pressure, that pulls the quantum field to the atom.
The outcoming energy causes oscillation and some of that energy travels into atoms. Their subatomic particles absorb that energy. And before an atom can send radiation, its energy level must rise higher than incoming radiation. That means the atom stores energy before it sends it. And reflection is not perfect. When energy travels into atoms, it cannot reach the center of the core. That forms electromagnetic- or quantum shadow, that pulls outcoming energy into the atom. In some models, dark matter would be an atom. Whose energy level is lower than other atoms.
https://scitechdaily.com/hubble-unmasks-universes-invisible-glue-stellar-motions-reveal-dark-matter-secrets/
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