Title: Potential for Lunar Interior Science by the Gravitational-Wave Detector LILA Show Chinese title

Title: LILA引力波探测器在月球内部科学中的潜力

Abstract: The Laser Interferometer Lunar Antenna (LILA), a concept for measuring sub-Hz gravitational waves on the Moon, would use laser strainmeters to obtain extremely sensitive strain measurements from 1 mHz to 1 Hz. With proposed strain sensitivities, LILA would also be able to measure the normal modes of the Moon from 1-10 mHz at high signal-to-noise ratio. Such measurements would enable significant advances in our understanding of both the spherically symmetric and even 3D deep internal structure of the Moon. Strainmeter measurements may even be able to detect the translational mode of the solid inner core of the Moon at frequencies below 0.1 mHz. Inertial seismometers, on the other hand, are unlikely to reach the performance of $\sim10^{-16}$ m/s$^2$/$\sqrt{\mathrm{Hz}}$ required to reliably detect normal modes below 5-10 mHz, even with optimistic assumptions on future projected performance. Show Chinese abstract

Abstract: 激光干涉月球天线（LILA），是一个用于在月球上测量亚赫兹引力波的概念，将使用激光应变计从1毫赫兹到1赫兹范围内获得极其灵敏的应变测量值。 具有提议的应变灵敏度，LILA还能够在高信噪比下测量月球的正常模式，频率范围为1-10毫赫兹。 这些测量将有助于我们对月球球对称和甚至三维深层内部结构的理解取得重大进展。 应变计测量甚至可能在低于0.1毫赫兹的频率下检测到月球固态内核的平动模式。 另一方面，惯性地震仪可能无法达到$\sim10^{-16}$ m/s$^2$/$\sqrt{\mathrm{Hz}}$的性能，以可靠地检测低于5-10毫赫兹的正常模式，即使对未来性能的预测持乐观态度也是如此。