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arXiv 0905.2055gr-qc
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变形Hrava-Lifshitz黑洞中的强场引力透镜

Strong field gravitational lensing in the deformed Hǒrava-Lifshitz black hole

Songbai Chen, Jiliang Jing

摘要:

采用强场极限方法,研究了变形Haurava-Lifshitz黑洞中强场引力透镜的性质,得到了相对论像的角位置和放大率.假设星系中心超大质量天体的引力场是用这个度规描述的,我们估计了强场极限下的引力透镜系数和观测量的数值。与Reissner-Norstr“{om}黑洞相比,我们发现随着参数$α$的增大,角位置$θ_{\infty}$减小得更慢,角间距$s$增大得更快,而$r_m$减小得更快.这可能为将来利用天文仪器探测形变Hrava-Lifshitz黑洞与Reissner-Norstr黑洞的区别提供了一条途径。

英文摘要:

Adopting the strong field limit approach, we studied the properties of strong field gravitational lensing in the deformed Hǒrava-Lifshitz black hole and obtained the angular position and magnification of the relativistic images. Supposing that the gravitational field of the supermassive central object of the galaxy described by this metric, we estimated the numerical values of the coefficients and observables for gravitational lensing in the strong field limit. Comparing with the Reissner-Norstr\"{om} black hole, we find that with the increase of parameter $α$, the angular position $θ_{\infty}$ decreases more slowly and $r_m$ more quickly, but angular separation $s$ increases more rapidly. This may offer a way to detect the effects of to distinguish a deformed Hǒrava-Lifshitz black hole from a Reissner-Norstr\"{om} black hole by the astronomical instruments in the future.

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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