论文标题
测量黑洞光子环的形状
Measuring the shape of a black hole photon ring
论文作者
论文摘要
一般相对论预测，黑洞附近的重力镜头将在图像上产生狭窄的“光子环”。基于约翰逊（Johnson）的最新作品，卢普萨斯（Lupsasca）等人。重点关注圆环，我计算了任意形状和强度的狭窄特征的长基线干涉标志。形状信息包含在每个基线角度的基线长度的复杂可见性的振荡频率中。这些结果提出了测量光子环的详细形状并与一般相对性的确切预测进行比较的可能性。
General relativity predicts that gravitational lensing near black holes will produce narrow "photon rings" on images. Building on recent work of Johnson, Lupsasca et al. focusing on circular rings, I calculate the long-baseline interferometric signature of a narrow feature of arbitrary shape and intensity. The shape information is contained in the oscillation frequencies of the complex visibility as a function of baseline length, for each baseline angle. These results raise the possibility of measuring the detailed shape of a photon ring and comparing to the precise predictions of general relativity.
