Astrophysics

2611 Submissions

[3] viXra:2611.0036 [pdf] submitted on 2026-11-13 21:32:22

From Galaxy Clusters to Galaxy Dynamics: Predicting Extra Gravity from Baryonic Structure

Authors: Alejandro Rey
Comments: 14 Pages. Code and data available

Can stars and gas predict the gravity attributed to dark matter? This work connects cluster masses, light deflection and galaxy rotation without fitting a dark halo to each system. Open data and code let others test the predictions.
Category: Astrophysics

[2] viXra:2611.0034 [pdf] submitted on 2026-11-13 21:28:05

Structures of Stellar Matter

Authors: Pastushenko Vladimir Alexandrovich
Comments: 7 Pages.

In this Universe, there is no matter outside of space, and no space without matter. In other words, space-matter are one and the same. This fact is fundamental in the Universe. And precisely because of this, the mathematical properties of space correspond to the physical properties of matter. This is the answer to the question WHY this is so. Mathematics considers many types of spaces. One way or another, they are based on Euclidean axiomatics and a number system. We proceed from the fundamental property of matter: motion. Therefore, here we present a dynamite space-matter, with a non-stationary Euclidean space. And within the framework of dynamic space-matter, the structures of stellar matter are considered.
Category: Astrophysics

[1] viXra:2611.0002 [pdf] submitted on 2026-11-01 23:08:31

The Tully-Fisher Relation: an Explanation Based on General Relativity

Authors: Fernando Salmon Iza
Comments: 7 Pages.

The empirical Tully-Fisher relationship for spiral galaxies has been the subject of study for many years. The flat character of the rotation speed curves of galaxies and the need for the existence of dark matter to explain them made it even more difficult to find a theoretical foundation between the fourth power of the rotation speed of stars and their luminous mass or baryonic mass, that is, without dark mass, which would serve to demonstrate the relationship that R. Brent Tully and J. Richard Fisher found in 1977 for spiral galaxies and which is very useful for calculating various astronomical calculations. was until now physically unprovable.In this report we have demonstrated the Tolly-Fisher relationship using generalized relativity and applying it to a new energetic model of a galaxy. To achieve this, we use the Sérsic luminosity profiles as an estimate of baryonic mass and our new galaxy model to calculate the curvature of space-time within the galactic volume, subsequently deriving the acceleration experienced by the stars. The results show that this acceleration gives rise to a uniform velocity for each star, regardless of its position. as long as these are at a distance less than the effective radius. Furthermore, we have obtained a proportionality relationship between the luminosity of the galaxy and the fourth power of the rotation speed of the stars - the Tully-Fisher relationship - for spiral galaxies, which until now had been purely empirical.
Category: Astrophysics