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      Listening to the Universe with Gravitational-Wave Astronomy

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          Abstract

          The LIGO (Laser Interferometer Gravitational-Wave Observatory) detectors have just completed their first science run, following many years of planning, research, and development. LIGO is a member of what will be a worldwide network of gravitational-wave observatories, with other members in Europe, Japan, and -- hopefully -- Australia. Plans are rapidly maturing for a low frequency, space-based gravitational-wave observatory: LISA, the Laser Interferometer Space Antenna, to be launched around 2011. The goal of these instruments is to inaugurate the field of {\it gravitational-wave astronomy}: using gravitational-waves as a means of listening to highly relativistic dynamical processes in astrophysics. This review discusses the promise of this field, outlining why gravitational waves are worth pursuing, and what they are uniquely suited to teach us about astrophysical phenomena. We review the current state of the field, both theoretical and experimental, and then highlight some aspects of gravitational-wave science that are particularly exciting (at least to this author).

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          Most cited references51

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          An Alternative to Compactification

          Conventional wisdom states that Newton's force law implies only four non-compact dimensions. We demonstrate that this is not necessarily true in the presence of a non-factorizable background geometry. The specific example we study is a single 3-brane embedded in five dimensions. We show that even without a gap in the Kaluza-Klein spectrum, four-dimensional Newtonian and general relativistic gravity is reproduced to more than adequate precision.
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            Massive black hole binaries in active galactic nuclei

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              Axisymmetric Black Hole Has Only Two Degrees of Freedom

              B Carter (1971)
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                Author and article information

                Journal
                22 October 2002
                2002-11-02
                Article
                10.1016/S0003-4916(02)00025-8
                astro-ph/0210481
                3f0497fd-cec5-4709-8cf8-b25b0da45029
                History
                Custom metadata
                NSF-KITP-02-157
                Ann.Phys.303:142-178,2003
                46 pages, 7 figures, invited review to appear in Annals of Physics. Added some additional references
                astro-ph gr-qc

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