The effect of the cosmological constant on a quadrupole signal in the linearized approximation

László Ábel Somlai, Mátyás Vasúth

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Abstract

In this study the effects of a nonzero cosmological constant Λ on a quadrupole gravitational wave (GW) signal are analyzed. The linearized approximation of general relativity was used, so the perturbed metric can be written as the sum of hGW GWs and hΛ background term, originated from Λ. The ΛhGW term was also included in this study. To derive physically relevant consequences of 0 comoving coordinates are used. In these coordinates, the equations of motion (EoMs) are not self-consistent so the result of the linearized theory has to be transformed to the FRW frame. The luminosity distance and the same order of the magnitude of frequency in accordance with the detected GWs were used to demonstrate the effects of the cosmological constant.

Original languageEnglish
Article number1850004
JournalInternational Journal of Modern Physics D
Volume27
Issue number2
DOIs
Publication statusPublished - Jan 1 2018

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Keywords

  • Gravitational waves
  • cosmological constant
  • quadrupole signal

ASJC Scopus subject areas

  • Mathematical Physics
  • Astronomy and Astrophysics
  • Space and Planetary Science

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