Gravitational wave astronomy has now left its infancy and has become an important tool for probing the most violent phenomena in our Universe. The LIGO/Virgo-KAGRA collaboration operates ground based detectors which cover the frequency band from 10Hz to the kHz regime. Meanwhile, the pulsar timing array and the soon to launch LISA mission will cover frequencies below 0.1Hz, leaving a gap in detectable gravitational wave frequencies. Here we show how a laser interferometer on the moon (LION) gravitational wave detector would be sensitive to frequencies from sub Hz to kHz. We find that the sensitivity curve is such that LION can measure compact binaries with masses between 10 and 100M _⊙ at cosmological distances, with redshifts as high as z = 100 and beyond, depending on the spin and the mass ratio of the binaries. LION can detect binaries of compact objects with higher-masses, with very large signal-to-noise ratios (SNRs), help us to understand how supermassive black holes got their colossal masses on the cosmological landscape, and it can observe in detail intermediate-mass ratio inspirals at distances as large as at least 100Gpc. Compact binaries that never reach the LIGO/Virgo sensitivity band can spend significant amounts of time in the LION band, while sources present in the LISA band can be picked up by the detector and observed until their final merger. Since LION covers the deci-Hertz regime with such large SNRs, it truly achieves the dream of multi messenger astronomy.

引力波天文学现在已经脱离了它的起步阶段，并已成为探索宇宙中最剧烈现象的重要工具。LIGO/Virgo-KAGRA 合作运行地基探测器，覆盖从 10Hz 到 kHz 范围的频段。同时，脉冲星计时阵列和即将启动的 LISA 任务将覆盖 0.1Hz 以下的频率，在可探测的引力波频率上留下空白。在这里，我们展示了月球上的激光干涉仪 (LION) 引力波探测器如何对亚赫兹到 kHz 的频率敏感。我们发现灵敏度曲线使得 LION 可以在宇宙距离上测量质量在 10 到 100 M _⊙之间的致密双星，红移高达z= 100 及以上，取决于双星的自旋和质量比。LION 可以探测到质量较高的致密物体的双星，具有非常大的信噪比（SNR），帮助我们了解超大质量黑洞如何在宇宙景观中获得巨大质量，它可以详细观察中间-至少 100Gpc 的距离处的质量比吸入。从未达到 LIGO/Virgo 灵敏度波段的紧凑双星可能会在 LION 波段中花费大量时间，而 LISA 波段中的源可以被探测器拾取并观察，直到它们最终合并。由于 LION 以如此大的信噪比覆盖了 deci-Hertz 范围，它真正实现了多信使天文学的梦想。