论文标题
来自SGR A*和M87*的常规黑洞的签名
Signatures of regular black holes from the shadow of Sgr A* and M87*
论文作者
论文摘要
随着SGR A*的黑洞图像的最新发布以及M87*的早期图像，现在可以真正希望在Horizon量表上更好地了解重力物理。在本文中，我们研究了常规黑洞方案的前景，并用Minkowski核心解释了观察到的M87*和SGR A*的阴影。常规黑洞通常出现在爱因斯坦重力中，耦合到非线性电动力学，并且很有趣，因为它们可以逃避一般相对论中产生的r = 0曲率奇异性。使用先前确定的质量和距离，我们计算与黑洞阴影相关的可观察物。与观察到的角直径相比，这些表明M87*和sgr a*的阴影有利于常规黑洞方案，其电荷很小但非零。讨论了含义。
With the recent release of the black hole image of Sgr A* alongside the earlier image of M87*, one can now really hope to acquire a better understanding of the gravitational physics at the horizon scale. In this paper, we investigate the prospect of the regular black hole scenario with a Minkowski core in explaining the observed shadow of M87* and Sgr A*. Regular black holes generally appear in Einstein gravity coupled to non-linear electrodynamics and are interesting as they can evade the r = 0 curvature singularity arising in general relativity. Using the previously determined mass and distance we compute the observables associated with the black hole shadow. These when compared with the observed angular diameter reveal that the shadow of M87* and Sgr A* favor the regular black hole scenario with a small but non-zero charge. The implications are discussed.
