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LISA technology—concept, status, prospects

Karsten Danzmann1,2 and Albrecht Rüdiger2

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The existence of gravitational waves is the most prominent of Einstein's predictions that has not yet been directly verified. The space project LISA shares its goal and principle of operation with the ground-based interferometers currently under construction: the detection and measurement of gravitational waves by laser interferometry. Only in space, detection of signals below, say, 1 Hz is possible. LISA, a joint project of ESA and NASA, is a mission that will measure these low-frequency waves. LISA consists of three spacecraft in heliocentric orbits, forming a triangle with 5 million km sides. Launch for LISA is scheduled for 2011, following a technology demonstrator LTP in 2006.


PACS

04.80.Nn Gravitational wave detectors and experiments

95.75.Kk Interferometry

MSC

83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)

83C35 Gravitational waves

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 10 (21 May 2003)

Received 4 December 2002

Published 25 April 2003



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