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

  • Abbott, B. P.
  • Abbott, R.
  • Adhikari, R. X.
  • Ananyeva, A.
  • Anderson, S. B.
  • Appert, S.
  • Arai, K.
  • Araya, M. C.
  • Barayoga, J. C.
  • Barish, B. C.
  • Berger, B. K.
  • Billingsley, G.
  • Biscans, S
  • Blackburn, J. K.
  • Bork, R.
  • Brooks, A. F.
  • Brunett, S.
  • Cahillane, C.
  • Callister, T. A.
  • Cepeda, C. B.
  • And 55 more
Publication Date
Dec 01, 2018
Caltech Authors
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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 deg^2 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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