标题： 一个用于中频引力波的超导张量探测器：其多通道性质及主要天体物理目标 显示英文标题

标题： A superconducting tensor detector for mid-frequency gravitational waves: its multi-channel nature and main astrophysical targets

摘要： 中频引力波探测器将与现有的地基探测器（对10赫兹以上敏感）和未来的空间探测器（如LISA，对10毫赫以下敏感）形成互补。 最近提出了一个基于地面的超导全向引力辐射观测台（SOGRO），并设计了几个变体用于0.1到10赫兹的频率范围。 针对SOGRO的三种概念设计（例如，pSOGRO、SOGRO和aSOGRO），我们研究了它们的多通道特性、灵敏度和科学案例。 SOGRO概念的一个关键特征是它的六个探测通道。 每个通道对所有可能的引力波极化（包括标量和矢量模式）的响应函数都被计算出来。 结合这些响应函数，我们还验证了SOGRO的全向性质。 因此，如果检测到引力波，即使只有一个SOGRO探测器，也能确定源的位置和引力波的极化。 考虑到SOGRO的灵敏度和技术要求，两个主要目标最有可能实现：致密双星系统的引力波和随机背景。 基于本工作中考虑的假设，预计中等质量双黑洞（质量范围从数百到$10^{4}$ $M_\odot$ ）的探测率将是$0.0014-2.5 \,\, {\rm yr}^{-1}$。 为了探测随机引力波背景，需要多个探测器。 两个aSOGRO探测器网络可能会超出宇宙学观测的间接限制，对随机背景施加限制。 显示英文摘要

摘要： Mid-frequency band gravitational-wave detectors will be complementary for the existing Earth-based detectors (sensitive above 10 Hz or so) and the future space-based detectors such as LISA, which will be sensitive below around 10 mHz. A ground-based superconducting omnidirectional gravitational radiation observatory (SOGRO) has recently been proposed along with several design variations for the frequency band of 0.1 to 10 Hz. For three conceptual designs of SOGRO (e.g., pSOGRO, SOGRO and aSOGRO), we examine their multi-channel natures, sensitivities and science cases. One of the key characteristics of the SOGRO concept is its six detection channels. The response functions of each channel are calculated for all possible gravitational wave polarizations including scalar and vector modes. Combining these response functions, we also confirm the omnidirectional nature of SOGRO. Hence, even a single SOGRO detector will be able to determine the position of a source and polarizations of gravitational waves, if detected. Taking into account SOGRO's sensitivity and technical requirements, two main targets are most plausible: gravitational waves from compact binaries and stochastic backgrounds. Based on assumptions we consider in this work, detection rates for intermediate-mass binary black holes (in the mass range of hundreds up to $10^{4}$ $M_\odot$) are expected to be $0.0014-2.5 \,\, {\rm yr}^{-1}$. In order to detect stochastic gravitational wave background, multiple detectors are required. Two aSOGRO detector networks may be able to put limits on the stochastic background beyond the indirect limit from cosmological observations.