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arXiv 1205.0899gr-qc
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致密玻色子星

Compact Boson Stars

Betti Hartmann, Burkhard Kleihaus, Jutta Kunz, Isabell Schaffer

摘要:

我们考虑了V形标量场势的紧致玻色子星。它们代表了Einstein-signum-Gordon方程的单参数解族。我们分析这些解决方案的物理性质,并确定其存在的域。沿着它们从紧致Q球解中出现的物理相关分支,它们的质量随着半径的增加而增加。从突变理论的观点出发,我们认为这个分支是稳定的,直到达到质量的最大值。在那里,质量和大小都在史瓦西极限的数量级上,因此,在致密恒星中众所周知的螺旋振荡行为开始出现。

英文摘要:

We consider compact boson stars that arise for a V-shaped scalar field potential. They represent a one parameter family of solutions of the scaled Einstein-signum-Gordon equations. We analyze the physical properties of these solutions and determine their domain of existence. Along their physically relevant branch emerging from the compact Q-ball solution, their mass increases with increasing radius. Empoying arguments from catastrophe theory we argue that this branch is stable, until the maximal value of the mass is reached. There the mass and size are on the order of magnitude of the Schwarzschild limit, and thus the spiralling respectively oscillating behaviour, well-known for compact stars, sets in.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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