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Prospects for observing and localizing gravitational-wave transients with Advanced LIGO, Advanced Virgo and KAGRA

  • Abbott, B. P.
  • Abbott, R.
  • Abbott, T. D.
  • Abernathy, M. R.
  • Acernese, F.
  • Ackley, K.
  • Adams, C.
  • Adams, T.
  • Addesso, P.
  • Adhikari, R. X.
  • Adya, V. B.
  • Affeldt, C.
  • Agathos, M.
  • Agatsuma, K.
  • Aggarwal, N.
  • Aguiar, O. D.
  • Aiello, L.
  • Ain, A.
  • Ajith, P.
  • Akutsu, T.
  • And 1080 more
Publication Date
Dec 01, 2018
Kyoto University Research Information Repository
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We present possible observing scenarios for the Advanced LIGO, Advanced Virgo and KAGRA gravitational-wave detectors over the next decade, with the intention of providing information to the astronomy community to facilitate planning for multi-messenger astronomy with gravitational waves. We estimate the sensitivity of the network to transient gravitational-wave signals, and study the capability of the network to determine the sky location of the source. We report our findings for gravitational-wave transients, with particular focus on gravitational-wave signals from the inspiral of binary neutron star systems, which are the most promising targets for multi-messenger astronomy. The ability to localize the sources of the detected signals depends on the geographical distribution of the detectors and their relative sensitivity, and 90% credible regions can be as large as thousands of square degrees when only two sensitive detectors are operational. Determining the sky position of a significant fraction of detected signals to areas of 5-20 deg² requires at least three detectors of sensitivity within a factor of ∼2 of each other and with a broad frequency bandwidth. When all detectors, including KAGRA and the third LIGO detector in India, reach design sensitivity, a significant fraction of gravitational-wave signals will be localized to a few square degrees by gravitational-wave observations alone.

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