Authors: Nirod K. Das
The unified electro-gravity (UEG) theory, which has been successfully used for modeling elementary particles, as well as single and binary stars, is extended in this paper to model gravitation in spiral galaxies. A new UEG model would explain the ``flat rotation curves'' commonly observed in the spiral galaxies. The UEG theory is developed in a fundamentally different manner for a spiral galaxy, as compared to prior applications of the UEG theory to the elementary particle and single stars. This is because the spiral galaxy, unlike the elementary particles or single stars, is not spherically symmetric. The UEG constant $\gamma$, required in the new model to support the galaxies' flat rotation speeds, is estimated using measured data from a galaxy survey, as well as for a selected galaxy for illustration. The estimates are compared with the $\gamma$ derived from a UEG model of elementary particles. The UEG model for the galaxy is shown to explain the empirical Tuly-Fisher Relationship (TFR), is consistent with the Modified Newtonian Dynamics (MOND), and is also independently supported by measured trends of galaxy thickness with surface brightness and rotation speed.
Comments: 10 Pages.
[v1] 2019-07-02 03:19:44
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