Gravitational lensing by straight cosmic strings

被引：0
作者：
A. T. Kotvytskiy
机构：
[1] Karazin Kharkiv National University,Institute of Radio Astronomy
[2] National Academy of Sciences of Ukraine,undefined
来源：
Theoretical and Mathematical Physics | 2015年 / 184卷
关键词：
gravitational lens; cosmic string; microlensing; brightness curve;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We consider effects due to gravitational lensing by hypothetical cosmic strings. We briefly review facts concerning infinite straight strings, obtain the equation for a gravitational lens produced by an infinite string in the classical form, and analyze features of the gravitational lensing for a given object in detail. We consider a finite straight string. We present caustics and critical curves for strings with different lengths and also some images produced by the considered gravitational lens. We propose a method for constructing brightness curves numerically. As an example of the working capacity of this method, we construct a concrete brightness curve for certain gravitational lens parameters.
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页码：1033 / 1046
页数：13
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