论文标题
混合二进制系统的重力镜头苛性剂
Caustics in gravitational lensing by mixed binary systems
论文作者
论文摘要
我们在非对称情况下使用$ 1/r^n $电势的二进制镜头，其中两个镜头具有不同的索引$ n $和$ m $。这类潜力已在多种情况下广泛使用，从不同功率定律描述的光环的星系到虫洞或异国物质的镜头。在本文中，我们为混合二进制文件提供了一个完整的临界曲线和苛性属地图集，从同等强度的情况开始，然后探索不等强度的系统。我们还计算所有不同拓扑制度之间的过渡。最后，我们发现了一些针对广泛的二进制情况和极端不平等强度的情况的有用的分析近似。
We investigate binary lenses with $1/r^n$ potentials in the asymmetric case with two lenses with different indexes $n$ and $m$. These kinds of potentials have been widely used in several contexts, ranging from galaxies with halos described by different power laws to lensing by wormholes or exotic matter. In this paper, we present a complete atlas of critical curves and caustics for mixed binaries, starting from the equal-strength case, and then exploring unequal-strength systems. We also calculate the transitions between all different topology regimes. Finally we find some useful analytic approximations for the wide binary case and for the extreme unequal-strength case.
