Author:
Jiang Tong,Dai Ning,Gong Yungui,Liang Dicong,Zhang Chao
Abstract
Abstract
Intermediate/Extreme mass ratio inspiral (I/EMRI) system provides a good tool
to test the nature of gravity in strong field.
Based on the method of osculating orbits,
we compute the orbital evolutions of I/EMRIs on quasi-elliptic orbits in
both Einstein's general relativity and Brans-Dicke theory.
The extra monopolar and dipolar channels in Brans-Dicke theory accelerate the orbital decay,
so it is important to consider the effects of monopolar and dipolar emissions on the waveform.
With the help of accurate orbital motion,
we generate waveform templates which include both monopolar and dipolar contributions for I/EMRIs on eccentric orbits in Brans-Dicke theory.
With a two-year observation of gravitational waves emitted from I/EMRIs by LISA,
we get the most stringent constraint on the Brans-Dicke coupling parameter ω
0 > 106.
Subject
Astronomy and Astrophysics
Cited by
5 articles.
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