The shortest distance around the Universe through us is unlikely to be much larger than the horizon diameter if microwave background anomalies are due to cosmic topology. We show that observational constraints from the lack of matched temperature circles in the microwave background leave many possibilities for such topologies. We evaluate the detectability of microwave background multipole correlations for sample cases. Searches for topology signatures in observational data over the large space of possible topologies pose a formidable computational challenge.

中文翻译：

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未来探索宇宙拓扑的前景

如果微波背景异常是由宇宙拓扑造成的，那么穿过我们的宇宙周围的最短距离不太可能比地平线直径大得多。我们表明，由于微波背景中缺乏匹配的温度圈而导致的观测限制为这种拓扑留下了许多可能性。我们评估了样本情况下微波背景多极相关性的可检测性。在大量可能的拓扑空间中搜索观测数据中的拓扑特征提出了巨大的计算挑战。