In the framework of Israel formalism the Oppenheimer-Snyder gravitational collapse and a Sehwarzschild cavity are studied. The motion of the Oppenheimer-Snyder thick shell can be represented by an appropriate thin she...In the framework of Israel formalism the Oppenheimer-Snyder gravitational collapse and a Sehwarzschild cavity are studied. The motion of the Oppenheimer-Snyder thick shell can be represented by an appropriate thin shell if the expansion of the shell is great, which is valid in the fiat universe.展开更多
文摘In the framework of Israel formalism the Oppenheimer-Snyder gravitational collapse and a Sehwarzschild cavity are studied. The motion of the Oppenheimer-Snyder thick shell can be represented by an appropriate thin shell if the expansion of the shell is great, which is valid in the fiat universe.