# Category Archives: Astrophysics and Cosmology

## Topological Phase Transition III: Solar Surface Eruptions and Sunspots

Tian Ma & Shouhong Wang, Topological Phase Transition III: Solar Surface Eruptions and Sunspots, 2017, hal-01672381 The physical and mathematical reasons for solar surface eruptions and sunspots are not satisfactorily understood. This paper is aimed to provide a new theory for … Continue reading

## Topological Phase Transitions II: Spiral Structure of Galaxies

Tian Ma & Shouhong Wang, Topological Phase Transitions II: Spiral Structure of Galaxies, 2017, hal-01671178 The aim of this paper is to derive a new mechanism for the formation of the galactic spiral patterns. 1. There are three types of galactic … Continue reading

## What does Einstein’s General Relativity Tell Us about Black Holes?

Presentation Slides We have today given a presentation at IU Science Slam with the same title as this post. The main themes are to present the black hole theory derived from Einstein’s General Relativity, and to point out the essential differences between … Continue reading

## Singularity at the Black-Hole Horizon is Physical

1. Newtonian Viewpoint Consider a massive body with mass inside a ball of radius . The Schwarzschild radius is defined by Based on the Newtonian theory, a particle of mass will be trapped inside the ball and cannot escape from … Continue reading

## Contradictions between the Black Hole and the Big-Bang Theories, and the Structure of the Universe

Based on the authors’ recent work [1, 2, 3], the main objectives of this post are as follows: First, assuming the Einstein theory of general relativity, we demonstrate that the theory of black holes and the theory of Big-Bang are … Continue reading

## Remarks on a New Blackhole Theorem

This post makes a few remarks on the following blackhole theorem proved in (Tian Ma & Shouhong Wang, Astrophysical Dynamics and Cosmology, J. Math. Study, 47:4 (2014), 305-378): Blackhole Theorem (Ma-Wang, 2014) Assume the validity of the Einstein theory of … Continue reading