Possibility of direct measurement of the acceleration of the universe using 0.1 Hz band laser interferometer gravitational wave antenna in space
Possibility of direct measurement of the acceleration of the universe using 0.1 Hz band laser interferometer gravitational wave antenna in space
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DOI：
10.1103/physrevlett.87.221103
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发表时间：
2001-11-26
影响因子：
8.6
通讯作者：
Nakamura, T
中科院分区：
文献类型：
--
作者：
Seto, N;Kawamura, S;Nakamura, T
在本世纪，有可能在空间中构建h(RMS)接近10(-27)、f类似于0.1 Hz的激光干涉仪引力波天线。利用这种天线，(1)通常每年可以探测到10(5)个合并双中子星的线性调频信号，S/N类似于10(4)；(2)我们可以通过对双中子星10年的观测直接测量宇宙的加速度；(3)通过相关分析可以探测到膨胀预测的欧米伽(GW)大于或类似于10(-20)的随机引力波。我们的加速运动相移公式可能适用于LISA的二元源。
It may be possible to construct a laser interferometer gravitational wave antenna in space with h(rms) similar to 10(-27) at f similar to 0.1 Hz in this century. Using this antenna, (1) typically 10(5) chirp signals of coalescing binary neutron stars per year may be detected with S/N similar to 10(4); (2) we can directly measure the acceleration of the universe by a 10 yr observation of binary neutron stars; and (3) the stochastic gravitational waves of Omega (GW) greater than or similar to 10(-20) predicted by the inflation may be detected by correlation analysis. Our formula for phase shift due to accelerating motion might be applied for binary sources of LISA.