用LISA和gLISA相干观测引力辐射
Coherent observations of gravitational radiation with LISA and gLISA
摘要：
地球同步激光干涉仪空间天线（gLISA）是一项天基引力波（GW）任务，过去五年来，斯坦福大学喷气推进实验室、国家空间研究所（I.N.P.E.，巴西）和航天系统劳拉。如果与LISA任务同时飞行，这两个阵列将提供联合灵敏度，从而在mHz波段的相应部分中实现两个任务的最佳性能。这种同时操作将产生一个最佳组合的灵敏度曲线，从几兆赫到1赫兹都是“白色”的，使这两个天线能够以高信噪比（SNR）探测质量在太阳质量（1000万到1亿）范围内的合并黑洞双星（BHB）。它们联合跟踪的能力，增强信噪比，类似于2015年9月14日高级激光干涉仪引力波天文台（aLIGO）观测到的信号（GW 150914事件），将导致更多可观测的小质量双星黑洞和提高这些来源的参数精度。LISA、gLISA和aLIGO一起将以良好的灵敏度覆盖从十分之一mHz到kHz频带的频带。
英文摘要：
The geosynchronous Laser Interferometer Space Antenna (gLISA) is a space-based gravitational wave (GW) mission that, for the past five years, has been under joint study at the Jet Propulsion Laboratory, Stanford University, the National Institute for Space Research (I.N.P.E., Brazil), and Space Systems Loral. If flown at the same time as the LISA mission, the two arrays will deliver a joint sensitivity that accounts for the best performance of both missions in their respective parts of the mHz band. This simultaneous operation will result in an optimally combined sensitivity curve that is "white" from a few mHz to 1 Hz, making the two antennas capable of detecting, with high signal-to-noise ratios (SNRs), coalescing black-hole binaries (BHBs) with masses in the range (10 - 100 million) solar masses. Their ability of jointly tracking, with enhanced SNR, signals similar to that observed by the Advanced Laser Interferometer Gravitational Wave Observatory (aLIGO) on September 14, 2015 (the GW150914 event) will result in a larger number of observable small-mass binary black-holes and an improved precision of the parameters characterizing these sources. Together, LISA, gLISA and aLIGO will cover, with good sensitivity, a frequency band from a tenth of a mHz to a kHz frequency band.
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