Can We Find Dark Matter in the Light?

Alex Wierbinski's picture

By Alex Wierbinski - Posted on 05 March 2019

The Stars above Our Heads


Shooting Some Light into the Darkness

Our Galaxy Rotating Equally, without Differential Rotation
The spiral structure of our galaxy, the Milky Way, in an artistic impression, from NASA/JPL-Caltech.
The spiral structure of our galaxy, the Milky Way, in an artistic impression, from NASA/JPL-Caltech.


Physicists Analyze Rotational Dynamics of Galaxies and Influence of the Photon Mass,
Johannes Gutenberg Universitaet Mainz, March 5, 2019.


The Missing Matter
“The orbital speeds of stars should decrease with their distance from the center of the galaxy, but in fact stars in the middle and outer regions of galaxies have the same rotational speed.”

We see gravity, but not matter.

Dark Matter
“...seeking it for decades, the existence of such 'dark matter' has yet to be definitively proven and we still don't know what it might be made of.”

Missing Gravity in the Light?
“...hypothesize that the mass of photons, which are particles of light, might be responsible.”

Non-Zero Mass
“...even a vanishingly tiny mass of the photon could, according to the scientists' collaborative proposal, have an effect on large-scale astrophysical phenomena.”

“ the core of the physicists' assumption is a consequence of what is known as Maxwell-Proca equations. These would allow additional centripetal forces to be generated as a result of the electromagnetic stresses in a galaxy.”

Not Gravity ( or Dark Matter)

"The hypothetical effect we are investigating is not the result of increased gravity."

"By assuming a certain photon mass, much smaller than the current upper limit, we can show that this mass would be sufficient to generate additional forces in a galaxy and that these forces would be roughly large enough to explain the rotation curves."



Bottom Line

Lots of novel, interesting approaches to finding this long missing gravity are happening.



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 dark matter, photon, mass, Maxwell-Proca, rotational speed, galaxies


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