Spectral energy density in an axisymmetric galaxy as predicted by an analytical model for the Maxwell field

TL;DR

This paper evaluates an analytical Maxwell field model for an axisymmetric galaxy, comparing its spectral energy distribution predictions with observations and radiation transfer models to explore implications for dark matter.

Contribution

It introduces a method to compute and adjust the spectral energy distribution in an analytical Maxwell field model for galaxies, aligning it with observations and comparing it with existing models.

Findings

Model predictions are close to radiation transfer results.

Adjusted model matches local spectral energy distribution observations.

Potential to test scalar gravitation theories' contribution to dark matter.

Abstract

An analytical model for the Maxwell radiation field in an axisymmetric galaxy, proposed previously, is first checked for its predictions of the spatial variation of the spectral energy distributions (SEDs) in our Galaxy. First, the model is summarized. It is now shown how to compute the SED with this model. Then the model is adjusted by asking that the SED predicted at our local position in the Galaxy coincide with the available observations. Finally the first predictions of the model for the spatial variation of the SED in the Galaxy are compared with those of a radiation transfer model. We find that the two predictions do not differ too much. This indicates that, in a future work, it should be possible with the present model to check if the "interaction energy" predicted by an alternative, scalar theory of gravitation, contributes to the dark matter. Keywords: Disk galaxy; interstellar radiation field; axial symmetry; electromagnetic field; Milky Way.