"This artist’s concept shows a pulsar, which is like a lighthouse, as its light appears in regular pulses as it rotates. Pulsars are dense remnants of exploded stars, and are part of a class of objects called neutron stars. Credit: NASA/JPL-Caltech" (ScitehDaily, Astronomers Detect Potential Dark Matter Objects in Space Using Pulsars)
Astronomers detect dark matter using neutron stars. But can we ever see dark matter itself? Weakly interacting massive particles, or WIMPs are a mystery. The thing that dark matter exists near centers of galaxies and black holes tells us that this thing follows the rule of the gravity. And because dark matter seems to pile up near gravitational centers tells us that the WIMPs should be real.
In some models, the WIMP is an extremely large particle or particle group. That means the superstrings that form the whisk-looking structure are at a very long distance from each other. That means the internal structure of that material is so thin that energy travels straight throw it. The reflection that comes from those superstrings would be so weak, that we cannot see that reflection.
The sombrero model can tell that the gravity effect of the WIMP is so powerful, that its energy hill cannot rise higher than the edge of a gravitational pothole. But there is also a model, that the WIMP is some Rydberg's state of atoms.
Wikipedia says that The Rydberg atom means. "A Rydberg atom is an excited atom with one or more electrons that have a very high principal quantum number, n. " (Wikipedia, Rydberg atom). That means the electron between the electron shells is at a higher energy level than it should. The Rydberg state can also mean a situation that is seen in Bose-Einstein condensate. The most out electron shell can be very far away from the atom's nucleus. That makes the second far electron rise at a higher energy level than the most out an electron.
"The higher the value of n, the farther the electron is from the nucleus, on average. Rydberg atoms have a number of peculiar properties including an exaggerated response to electric and magnetic fields, long decay periods and electron wavefunctions that approximate, under some conditions, classical orbits of electrons about the nuclei. The core electrons shield the outer electron from the electric field of the nucleus such that, from a distance, the electric potential looks identical to that experienced by the electron in a hydrogen atom. (Wikipedia, Rydberg Atom)
There is a theoretical possibility that the atom's nucleus can go out from its electron cloud. And that thing is one of the most theoretical things that can happen to an atom. And nobody saw a situation. Where the atom's nucleus orbits an electron cloud. But that extreme situation can be possible.
What if the quarks in an atom's nucleus form a similar thing as Rydberg atoms? What if the distance of quarks can be very long? Can that thing make the WIMP possible? The WIMP means particle, that can interact only through the gravitation.
But maybe it's possible. That Rydberg atom-type phenomenon can formed in some other subatomic structures than electrons. And the question is can Rydberg-state form between things like quarks? But those things are only the theories of what the WIMP can be.
https://bigthink.com/starts-with-a-bang/detect-dark-matter-collisionless/
https://scitechdaily.com/astronomers-detect-potential-dark-matter-objects-in-space-using-pulsars/
https://en.wikipedia.org/wiki/Rydberg_atom
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