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The Korean Astronomical Society (한국천문학회)
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GRAVITATIONAL WAVES AND ASTRONOMY

중력파와 천문학

  • Lee, Hyung-Mok (Department of Physics and Astronomy, Seoul National University) ;
  • Lee, Chang-Hwan (Department of Physics, Pusan National University) ;
  • Kang, Gung-Won (Korea Institute for Science and Technology Information) ;
  • Oh, John-J. (National Institute for Mathematical Sciences, KT Daeduck Research Center) ;
  • Kim, Chung-Lee (Department of Physics, West Virginia University) ;
  • Oh, Sang-Hoon (National Institute for Mathematical Sciences, KT Daeduck Research Center)
  • Received : 2011.06.14
  • Accepted : 2011.06.27
  • Published : 2011.06.06
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Abstract

Gravitational waves are predicted by the Einstein's theory of General Relativity. The direct detection of gravitational waves is one of the most challenging tasks in modern science and engineering due to the 'weak' nature of gravity. Recent development of the laser interferometer technology, however, makes it possible to build a detector on Earth that is sensitive up to 100-1000 Mpc for strong sources. It implies an expected detection rate of neutron star mergers, which are one of the most important targets for ground-based detectors, ranges between a few to a few hundred per year. Therefore, we expect that the gravitational-wave observation will be routine within several years. Strongest gravitational-wave sources include tight binaries composed of compact objects, supernova explosions, gamma-ray bursts, mergers of supermassive black holes, etc. Together with the electromagnetic waves, the gravitational wave observation will allow us to explore the most exotic nature of astrophysical objects as well as the very early evolution of the universe. This review provides a comprehensive overview of the theory of gravitational waves, principles of detections, gravitational-wave detectors, astrophysical sources of gravitational waves, and future prospects.

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