Relativity and Cosmology


Dark Matter and the Cosmic Web

Authors: Gene H Barbee

The cosmic web is a filament like structure that connects galaxies. It has been imaged by gravitational lensing and is thought to be composed mainly of dark matter since it is not visible in the electromagnetic spectrum. There are computer simulations of the web showing that galaxies are often nodes for multiple branches. View the simulations at WMAP, PLANCK and other background radiation anisotropy teams have concluded that dark matter is 5 times more prevalent than normal matter. Scientists are trying to identify dark matter and the unexpected web like structure adds to the list of cosmology unknowns. This document proposes that dark matter consists of neutron waves or neutrons (wave/particle duality) contained by a gravitational field. Dark matter density would be the same as normal matter density but neutron waves might have a radius of only 1.53e-15 meters (the wavelength of a neutron). This means it could be very elongated (e.g. 5e16 meters). It may coil into a small volume unless stretched by gravity. The neutron/waves location in the long filament is probabilistic but it contains 939 MeV/filament (1.675e-27 Kg). A diffuse structure and the absence of electromagnetic features will make it difficult to detect. Originally dark and normal matter is mixed and both fall into massive structures like galaxies over time. The residual dark matter probably forms aligned filaments we see as the cosmic web. It would attract some normal matter and be gravitationally stretched between galaxies. Dark matter has only gravitational interactions. As it moves into galaxies it forms halos and explains anomalous galactic velocity observations. The author will present a re-analysis of the baryon/photon ratio (critical to residual deuterium abundance data) and will review that WMAP data that lead scientists to conclude that dark matter was 5 times more prevalent than normal matter. A detailed model from matter equality to decoupling will be presented. The features of interest are the waves that cause temperature variations in the background radiation. A model that predicts the temperature of the hot spots will be presented. Based on re-analysis of limiting considerations it will be shown that half of all matter is baryons and the other half is dark matter. Most

Comments: 36 Pages. Please contact gene at

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Submission history

[v1] 2017-01-15 10:10:27
[v2] 2017-02-06 21:33:19

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