What color is the dark matter

Well LaurieAG finds out some maths linking pi with both masses..

Md+Mo = 2 * pi * Mo ?

What's the significance? It is just a coincidence or does it have any deeper meaning?

 

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The total matter in the visible universe, as calculated via the Lambda CDM model using Planck 2013 data, equals the observed matter times 2 * Pi.

 

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Significance?

It is just the coincidence or it has some meaning?

 

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The standard Compton wavelength equals the reduced Compton wavelength times 2 * Pi and the standard Planck constant equals the reduced Planck constant times 2 * Pi.

https://en.wikipedia.org/wiki/Compt...he_reduced_and_non-reduced_Compton_wavelength

How much would you expect a mass comparison to be out by if you made no distinction between standard and reduced Compton wavelengths in the 2 different equation forms (above) with the wavelength, E, h and c all being constant in both forms?

 

It just does not connect, because as such there is no concept of reduced mass (m/2pi). For wavelength, it makes sense as instead of doing calculations on 2pi radians, you do on unit radian.

Moreover there are two types associated, one is Dark Matter and another is Ordinary Matter, so equating reduced mass of total matter with ordinary matter mass appears misplaced. One must define the cause behind any link between DM mass and ordinary matter mass, then the significance can come out or based on this finding (total mass = 2 pi ordinary matter mass), pl suggest some cause or relevance.

 

In summing and in relation to the OP.
Non Baryonic DM is not coloured and neither reflects or absorbs light.
The same applies actually also to radiation. What we ascertain colour to in that regard, is simply distinction of frequencies, most notably of course those frequencies that are sensitive to the human eye.
http://education.seattlepi.com/not-list-black-white-colors-physics-3426.html
Visible light, radio waves, x-rays and other types of radiation are all part of the electromagnetic spectrum. Visible light is electromagnetic radiation with wavelengths ranging from roughly 400 and 700 nanometers. In physics, a color is visible light with a specific wavelength. Black and white are not colors because they do not have specific wavelengths. Instead, white light contains all wavelengths of visible light. Black, on the other hand, is the absence of visible light.

 

On the bottom line of page 13 in Stephen Hawking's paper "Soft Hair on Black Holes", there is a reference to a Compton wavelength as being the reduced Planck constant (h_bar) divided by M (total mass with unitary c).
https://arxiv.org/abs/1601.00921

Considering that the reduced Compton wavelength actually equals the reduced Planck constant divided by M (total mass with unitary c) and everything apart from M is the same in both equations, where does the 2 * Pi (i.e. the difference between the standard and reduced wavelengths) get accounted?

 

Does dark matter exist somewhere on our earth?