Which is not a candidate for dark matter?

Non-baryonic matter Candidates for non-baryonic dark matter are hypothetical particles such as axions, sterile neutrinos, weakly interacting massive particles (WIMPs), gravitationally-interacting massive particles (GIMPs), supersymmetric particles, geons, or primordial black holes.

Is there hydrogen in dark matter?

The theory, simply stated, is that what we currently refer to as “cold dark matter” is, in actuality, slow-moving interstellar and intergalactic neutral atomic hydrogen in its lower 1 s ground state.

What is dark matter not?

Unlike normal matter, dark matter does not interact with the electromagnetic force. This means it does not absorb, reflect or emit light, making it extremely hard to spot. In fact, researchers have been able to infer the existence of dark matter only from the gravitational effect it seems to have on visible matter.

What is hydrogen’s identity?

The hydrogen identity implies that the random walk u(n) = L^n u with integer n solves the one-dimensional Jacobi equation Delta u=H^2 with (Delta u)(n)=u(n+2)-2 u(n)+u(n-2). Every solution is represented by such a reversible path integral.

Is hydrogen an atom?

1
Hydrogen/Atomic number

Is ionized hydrogen in the atmosphere of stars?

A cloud of ionized hydrogen is called an H II region. Many of them are also ionized in the vicinity of hot stars; they then capture electrons and emit light, just as hydrogen does, allowing them to be observed by astronomers. But generally, the red hydrogen line is the strongest, and that is why H II regions look red.

Why are hydrogen ions called protons?

A hydrogen ion is called a proton because hydrogen atoms which have only one electron lose that one electron to become an ion leaving only one…

What is not matter and why?

Matter is anything that has mass and takes up space. This includes atoms, elements, compounds, and any object you can touch, taste, or smell. Things that are non-matter either have no mass or else don’t fill a volume. Energy: Light, heat, kinetic and potential energy, and sound are non-matter because they are massless.

Is there an alternative to cold dark matter?

On large scales, cold dark matter is necessary, and no alternative or substitute will do. However, mapping out the X-ray light (pink) is not necessarily a very good indication of the dark matter distribution (blue). 5.) Dark matter causes gravitational effects in places where normal matter isn’t located.

Is it true that dark matter cannot be detected?

However, observations indicate otherwise. 1.) Dark matter is not simply normal matter that we cannot detect. This is something that’s completely known. Dark matter cannot be: or anything else made originally from normal matter. We have a suite of evidence that rules out that possibility.

Will dark matter obey a different distribution depending on star formation?

If new research is correct, then dark matter will obey a different distribution depending on how star formation, over the galaxy’s history, has heated it. The dark matter-to-normal matter ratio of over 600-to-1 is the greatest ratio ever seen in the dark matter-favoring direction.

Does dark matter interact with light?

However, whatever that pathway was, those interactions are no longer occurring and haven’t occurred with great abundances in a very long time. Direct detection experiments haven’t revealed dark matter, constraining its possible mass and cross-section. It doesn’t absorb or blur distant starlight, restricting its interactions with light.