论文标题
对使用黑洞阴影作为标准统治者的担忧
Concerns regarding the use of black hole shadows as standard rulers
论文作者
论文摘要
最近，Tsupko等人。提出了一个非常有趣的提议，以使用高红移超级黑洞（SMBHS）作为标准统治者的阴影。原则上，这将使我们能够探究红移范围内的扩展历史记录，否则访问了挑战。在本说明中，我们批判性地检查了该建议，并确定了以前被忽略的许多重要问题。这些包括难以获得可靠的SMBH质量估计并达到所需的角度分辨率，以及对高红移SMBH的积聚动力学的了解不足。尽管这些问题目前似乎可以阻止高红移SMBH阴影被用作强大的标准统治者，但我们希望提前标记它们将有助于在实验上可行时使理论上的探针成熟。
Recently, Tsupko et al. have put forward the very interesting proposal to use the shadows of high-redshift supermassive black holes (SMBHs) as standard rulers. This would in principle allow us to probe the expansion history within a redshift range which would otherwise be challenging to access. In this note, we critically examine this proposal, and identify a number of important issues which had been previously overlooked. These include difficulties in obtaining reliable SMBH mass estimates and reaching the required angular resolution, and an insufficient knowledge of the accretion dynamics of high-redshift SMBHs. While these issues currently appear to prevent high-redshift SMBH shadows from being used as robust standard rulers, we hope that our flagging them early will help in making this probe theoretically mature by the time it will be experimentally feasible.
