Karl Schwarzschild's 100th Anniversary: No BH Event Horizon

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Discussion Overview

The discussion centers around the interpretation of Karl Schwarzschild's solution to the general relativity field equations, particularly regarding the existence of a black hole event horizon and the nature of singularities in the context of astrophysics. Participants explore historical contributions, mathematical interpretations, and implications for current astrophysical models.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Historical

Main Points Raised

  • One participant asserts that Schwarzschild's paper does not support the existence of a black hole event horizon, claiming it only describes a physical singularity at the origin.
  • Another participant notes that the solution was also discovered by Dutch mathematician Droste, suggesting a broader historical context.
  • A third participant challenges the original poster's interpretation, referencing a paper that critiques misunderstandings related to the mathematical treatment of Schwarzschild's coordinates and emphasizes that the radial coordinate approaching zero does not describe a point but rather a sphere.
  • A final comment suggests that the previous post sufficiently addresses the topic, indicating a desire to conclude the discussion.

Areas of Agreement / Disagreement

Participants express differing views on the interpretation of Schwarzschild's solution, with no consensus reached regarding the existence of a black hole event horizon or the implications of the singularity at the origin.

Contextual Notes

There are unresolved mathematical interpretations regarding the nature of the radial coordinate in Schwarzschild's solution, and the discussion reflects varying levels of understanding and acceptance of established concepts in general relativity.

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January 13, 2016 will be the one hundredth anniversary of Karl Schwarzschild's paper on the solution to the GR field equations around a spherically symmetric gravitating body.

You can find an English translation here: http://arxiv.org/pdf/physics/9905030v1.pdf

I urge everyone to read it. You will find there is no basis for a coordinate singularity (Black Hole Event Horizon) but only a physical singularity at the origin (null punkt).

It is time for a very serious discussion of this aberration of astrophysics (the Black Hole Event Horizon).
 
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Actually, it wasn't just Schwarzschild who found this solution, I believe the Dutch mathematician Droste also found it around the same time. See e.g.

http://www.ptep-online.com/index_files/2006/PP-05-10.PDF

Edit Not sure about the rest of its content.
 
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See http://arxiv.org/abs/1308.0394 (section III) for a discussion of what is wrong with Loinger's translators comment, and also with erroneous opinion of the OP. This is all very well trod math and physics. Repetition of misunderstandings does not improve them.

One thing the above paper doesn't do is compute the area of a surface of given 'funny radial coordinate' for a given t. If you do this, you find, for Schwarzschild's original radial coordinate, the limit of area as the coordinate goes to zero is NOT zero. This establishes that the radial coordinate=0 doe NOT discribe a point; it describes a sphere.
 
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PAllen's post is all that needs to be said. Thread closed.
 

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