Phys. Rev. Lett. 87, 221103 (2001) [4 pages]Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in SpaceReceived 4 June 2001; published 9 November 2001 It may be possible to construct a laser interferometer gravitational wave antenna in space with hrms∼10-27 at f∼0.1Hz in this century. Using this antenna, (1) typically 105 chirp signals of coalescing binary neutron stars per year may be detected with S/N∼104; (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 ΩGW≳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. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.221103
DOI:
10.1103/PhysRevLett.87.221103
PACS:
95.55.Ym, 04.80.Nn, 98.80.Es
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