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arXiv 1504.02113gr-qcastro-ph.HEhep-th
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恒星和黑洞的电磁喷流

Electromagnetic Jets from Stars and Black Holes

Samuel E. Gralla, Alexandru Lupsasca, Maria J. Rodriguez

摘要:

我们提出了解析的无力解决方案建模旋转的恒星和黑洞沉浸在磁场薄盘,终止于内半径。在平坦时空中是精确解,在Kerr时空中是近似解.这个致密物体产生一个圆锥形的喷流,它的性质携带着关于它的性质的信息。例如,来自恒星的喷流被电流片包围,而黑洞的喷流则是光滑的。我们在每种情况下计算一个有效电阻,并与能量提取电路模型中使用的规范值进行比较。这些解决方案说明了Blandford-Znajek工艺在清洁环境中进行能量提取和射流形成的所有基本特征。

英文摘要:

We present analytic force-free solutions modeling rotating stars and black holes immersed in the magnetic field of a thin disk that terminates at an inner radius. The solutions are exact in flat spacetime and approximate in Kerr spacetime. The compact object produces a conical jet whose properties carry information about its nature. For example, the jet from a star is surrounded by a current sheet, while that of a black hole is smooth. We compute an effective resistance in each case and compare to the canonical values used in circuit models of energy extraction. These solutions illustrate all of the basic features of the Blandford-Znajek process for energy extraction and jet formation in a clean setting.

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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