Discussion Overview
The discussion explores the nature of star collapse, specifically questioning why a collapsing star might appear as a flat disk rather than maintaining a spherical shape. It also touches on the concept of planetary systems and the potential for massive planets at their centers.
Discussion Character
Main Points Raised
- One participant questions why a star that collapses uniformly would become a flat disk, suggesting a crunching effect towards the equator.
- Another participant asserts that a star collapses spherically symmetrically to a point singularity, and if rotating, it forms a ring rather than a disk.
- A participant raises a question about energy burst jets, asking how they can emerge from the center of a ring if there is nothing at the center.
- Another participant responds that the jets originate from outside an ordinary surface or event horizon, not from the center.
- A participant challenges the shape of the event horizon, asking why it is disk-shaped and not ball-shaped, given the flat rotation of the singularity.
- A later reply states that the event horizon is always spherical in shape.
Areas of Agreement / Disagreement
The discussion contains multiple competing views regarding the shape of the event horizon and the nature of star collapse, with no consensus reached on these points.
Contextual Notes
Participants express uncertainty about the relationship between the rotation of singularities and the shape of event horizons, as well as the origins of energy jets in relation to the structure of collapsed stars.
