An antenna for laser gravitational-wave observations in space

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Abstract

Progress during the past two years on a proposed Laser Gravitational-Wave Observatory in Space (LAGOS) is discussed. Calculated performance for a 106 km sized antenna over the frequency range of 10−5 to 1 Hz is given. The sensitivity from 10−3 to 10−1 Hz is expected to be 1 × 10−21/Hz0.5. Noise sources such as accelerations of the drag-free test masses by random molecular impacts and by fluctuations in the net thermal radiation pressure will limit the sensitivity at lower frequencies. The scientific objectives are the observation of CW gravitational waves from large numbers of binary systems and the detection of pulses which may have been emitted during the period of galaxy formation.

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Staff Member, Quantum Physics Division, National Institute of Standards and Technology

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