论文标题
从黑洞阴影中紧凑的额外尺寸的长度
The length of a compact extra dimension from black hole shadow
论文作者
论文摘要
为探索黑色弦及其不稳定的努力已做出了许多努力，但是额外尺寸较少的黑色弦的命运仍然没有定论。现在从5D均匀的黑色字符串开始，我们表明M87*和Sgra*的EHT观察结果不仅可以排除具有无限额外维度的黑色字符串，而且还可以约束紧凑的额外维度的长度，这比Gregory-laflamme（GL）不稳定的临界长度小得多。我们的发现支持以下假设：额外的维度紧凑避免了GL不稳定性。
Plenty of efforts have been made to explore the black string and its instability, but the fate of the black strings with fewer extra dimensions is still inconclusive. Now starting from the 5D uniform black string, we show that the EHT observations of M87* and SgrA* can not only rule out the black string with an infinite extra dimension, but also constrain the length of a compact extra dimension, which is much smaller than the critical length given from the Gregory-Laflamme (GL) instability. Our findings support the hypothesis that the extra dimension is compact avoiding the GL instability.
