Mysterious dark galaxy emits no visible light.

Most galaxies, like NGCC4414, shine across the spectrum. Dark galaxies remain in shadow. (AURA/STScI/NASA/Public Domain) (ScienceAlert.com/Mysterious Dark Galaxy Emits No Visible Light, Scientists Say)

A dark galaxy is a structure in the universe that doesn't shine visible light at all. That means dark galaxies remain invisible to the human eye. A dark galaxy is one of the pieces of evidence. That dark matter could create similar structures with visible material. So we can call those galaxies stealth galaxies. If the dark matter has particle form. Researchers can find proof for that thing in dark galaxies. 

Dark matter is one of the biggest things in the universe. There is the possibility that dark matter acts like a stealth structure. The radiation travels over the dark matter and that denies the reflection. So dark matter is dark because it doesn't make reflection. If radiation slides over a particle it's unseen. 

The direction of energy flow determines if the particle is warm or cold. 

Warm object transmits energy. 

The cold object receives energy. 

None of the known particles can remain cold forever. Sooner or later, radiation that travels in the object turns its energy level higher than its environment. That means the particle object turns to transmit radiation and it makes the object visible. The reason why the energy level rises in the cosmos higher than its environment is that. The kinetic energy is also rising the energy level of the object. And when the object starts to transmit energy it turns visible. 

Material can be warm or cold. When the material is cold, energy or wave movement travels in it. And then when the material is warm. Energy travels out from it. That wave movement that comes out from the material makes it visible. The mystery of dark matter is how the material can remain cold forever. 

Is dark matter the entirety of two particles? If there are two quantum fields around the object. The particle could same time be warm or cold. If the outer quantum field is cold it pulls energy between those quantum fields. And then, if the inner quantum field is warm. It can push the energy away from the particle pair. And that energy could be gravitational radiation. 

The biggest question is: why we cannot see dark matter? There is the gravitational effect that has an origin. And sometimes the source of that gravitational effect is explained as virtual particles like gravitational whirls and the gravitational maser effect. Gravitational interaction without any visible source is always interesting. 

If dark matter particles or WIMPs (Weakly Interacting Massive Particles) existed. The thing that makes the gravitational effect of dark matter can be the virtual particle or quantum whirl that is forming in that particle's poles. The WIMP will transfer radiation to its axle. And the virtual particle that forms near the WIMP would make the strange gravitational effect whose origin remains unknown until this thing is proven. 

https://www.sciencealert.com/mysterious-dark-galaxy-emits-no-visible-light-scientists-say

https://en.wikipedia.org/wiki/Dark_matter

https://shorttextsofoldscholars.blogspot.com/