Possibility of direct measurement of the acceleration of the universe using 0.1 Hz band laser interferometer gravitational wave antenna in space

被引:776
作者
Seto, N [1 ]
Kawamura, S
Nakamura, T
机构
[1] Osaka Univ, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan
[2] Natl Astron Observ, Mitaka, Tokyo 1818588, Japan
[3] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
关键词
D O I
10.1103/PhysRevLett.87.221103
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页码:221103 / 221103
页数:4
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