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Higher signal harmonics, LISA’s angular resolution, and dark energy

K. G. Arun1,2,*, Bala R. Iyer3,†, B. S. Sathyaprakash4,‡, Siddhartha Sinha3,5,§, and Chris Van Den Broeck4,∥

  • 1LAL, Université Paris-Sud, IN2P3/CNRS, Orsay, France
  • 2𝒢ℛeℂ𝕆, Institut d’Astrophysique de Paris–C.N.R.S., Paris, France
  • 3Raman Research Institute, Bangalore, 560 080, India
  • 4School of Physics and Astronomy, Cardiff University, 5, The Parade, Cardiff, United Kingdom, CF24 3YB
  • 5Department of Physics, Indian Institute of Science, Bangalore, 560 012, India

  • *arun@lal.in2p3.fr
  • †bri@rri.res.in
  • ‡B.Sathyaprakash@astro.cf.ac.uk
  • §p_siddhartha@rri.res.in
  • ∥Chris.van-den-Broeck@astro.cf.ac.uk
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Phys. Rev. D 76, 104016 – Published 9 November, 2007Erratum Phys. Rev. D 76, 129903 (2007)

DOI: https://doi.org/10.1103/PhysRevD.76.104016

Abstract

It is generally believed that the angular resolution of the Laser Interferometer Space Antenna (LISA) for binary supermassive black holes (SMBH) will not be good enough to identify the host galaxy or galaxy cluster. This conclusion, based on using only the dominant harmonic of the binary SMBH signal, changes substantially when higher signal harmonics are included in assessing the parameter estimation problem. We show that in a subset of the source parameter space the angular resolution increases by more than a factor of 10, thereby making it possible for LISA to identify the host galaxy/galaxy cluster. Thus, LISA’s observation of certain binary SMBH coalescence events could constrain the dark energy equation of state to within a few percent, comparable to the level expected from other dark energy missions.

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Corrections

21 December, 2007

Erratum

Publisher’s Note: Higher signal harmonics, LISA’s angular resolution, and dark energy [Phys. Rev. D 76, 104016 (2007)]

K. G. Arun, Bala R. Iyer, B. S. Sathyaprakash, Siddhartha Sinha, and Chris Van Den Broeck
Phys. Rev. D 76, 129903 (2007)

Article Text

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Outline

Information

Phys. Rev. D 76, 104016– Published 9 November, 2007
  • Received 27 July 2007
  • Publisher error corrected 21 December 2007

© 2007 American Physical Society

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