Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space

Naoki Seto, Seiji Kawamura, and Takashi Nakamura
Phys. Rev. Lett. 87, 221103 – Published 9 November 2001
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Abstract

It may be possible to construct a laser interferometer gravitational wave antenna in space with hrms1027 at f0.1Hz in this century. Using this antenna, (1) typically 105 chirp signals of coalescing binary neutron stars per year may be detected with S/N104; (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 ΩGW1020 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.

  • Received 4 June 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.221103

©2001 American Physical Society

Authors & Affiliations

Naoki Seto1, Seiji Kawamura2, and Takashi Nakamura3

  • 1Department of Earth and Space Science, Osaka University, Toyonaka 560-0043, Japan
  • 2National Astronomical Observatory, Mitaka 181-8588, Japan
  • 3Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan

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Vol. 87, Iss. 22 — 26 November 2001

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