Oppenheimer-Snyder model of star collapse

Thread starter TrickyDicky
Start date Nov 11, 2012
Tags

Collapse Model Star Star collapse

In summary, the conversation in posts #103, #104, #107, and #108 of the thread mentioned the Oppenheimer-Snyder model as a more plausible model than the Schwarzschild spacetime. However, there is disagreement over the interpretation of the exterior Schwarzschild solution and its inclusion of the Kruskal-Szekeres diagram. The O-S model is a highly idealized model and the conditions required for its validity have not been ruled out theoretically or empirically. The model only considers a portion of the maximally extended Schwarzschild spacetime, which is why it is not considered a plausible model.

Dec 2, 2012

#141

harrylin

pervect said:

[..] there's opportunity to apply the exact same arguments to other situations involving event horizons that don't involve black holes. Specifically, the Rindler horizon. These would be difficult to test with our current technology, though. The experiment is interesting, so I'll spell it out in more detail, since I've been alluding it to some time in the belief it was obvious (but perhaps it isn't to you? )

The experiment involves launching a spaceship that accelerates at 1g for a year shiptime - or .1g for 10 years shiptime - or .001 g for 1000 years shiptime. [..]

harrylin said:

[..] Regretfully more than ever the discussion is hindered by incompatible definitions based on different schools of teaching. I intend to do a "retake" of that illustration in the new thread, with a brief summary of comments by different people, including yours. [..].

The new thread: https://www.physicsforums.com/showthread.php?p=4181348