Recently, detailed studies have been made to compare the performance of the European next generation GW observatory Einstein Telescope (ET) in a single-site triangular configuration with the performance of a configuration featuring two L-shaped detectors in different sites, still taken to have all other ET characteristics except for the geometry, in particular, underground and composed of a low-frequency interferometer working at cryogenic temperatures and a high-frequency interferometer working at room temperature. Here we study a further possibility for a European network, made by a single L-shaped underground detector, like one of the detectors considered for the 2L version of ET, and a single third-generation 20-km L-shaped interferometer on the surface. We compare the performances of such a network to those of the triangle and of the 2L-underground ET configurations. We then examine the performance of an intercontinental network made by a 40-km CE in the U.S., together with any of these European networks.

中文翻译：

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结合地下和地面第三代引力波干涉仪


最近，已经进行了详细的研究，以比较欧洲下一代 GW 天文台爱因斯坦望远镜 （ET） 在单站点三角形配置中的性能与在不同站点具有两个 L 形探测器的配置的性能，仍然被认为具有除几何形状外的所有其他 ET 特性，特别是地下，由在低温下工作的低频干涉仪和工作的高频干涉仪组成在室温下。在这里，我们研究了欧洲网络的另一种可能性，由单个 L 形地下探测器制成，就像考虑用于 2L 版本的 ET 的探测器之一，以及表面上的单个第三代 20 公里 L 形干涉仪。我们将这种网络的性能与三角形和 2L 地下 ET 配置的性能进行了比较。然后，我们研究了美国 40 公里 CE 构建的洲际网络以及这些欧洲网络中的任何一个的性能。