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arXiv 0803.2536gr-qc
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Ernst时空的光子俘获锥和嵌入图

Photon capture cones and embedding diagrams of the Ernst spacetime

Zdeněk Stuchlík, Stanislav Hledík

摘要:

史瓦西时空和恩斯特时空的特征之间的差异,通过比较光子捕获锥,和嵌入图的$t=\mathrm{const}$截面的赤道平面的普通和光学参考几何的这些时空。恩斯特时空的非平坦渐近性质反映在两个明显的事实上:逃逸光子锥对应于纯粹向外的径向方向,普通几何和光学几何的嵌入图都渐近地收缩到零半径。利用嵌入图的性质,这些时空可能有类似的字符的区域进行了估计,并认为它们可以存在的恩斯特时空的磁场的强度足够低。

英文摘要:

The differences between the character of the Schwarzschild and Ernst spacetimes are illustrated by comparing the photon capture cones, and the embedding diagrams of the $t=\mathrm{const}$ sections of the equatorial planes of both the ordinary and optical reference geometry of these spacetimes. The non-flat asymptotic character of the Ernst spacetime reflects itself in two manifest facts: the escape photon cones correspond to purely outward radial direction, and the embedding diagrams of both the ordinary and optical geometry shrink to zero radius asymptotically. Using the properties of the embedding diagrams, regions of these spacetimes which could have similar character are estimated, and it is argued that they can exist for the Ernst spacetimes with a sufficiently low strength of the magnetic field.

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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