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    Measuring cosmological redshift using gravitational waves from compact binaries with mass transfer

    Zi-Han Zhang1,2,*, Tan Liu3,4,†, Shenghua Yu5,‡, and Zong-Kuan Guo3,4,6,§

    • *Contact author: zhangzihan242@mails.ucas.ac.cn
    • †Contact author: lewton@mail.ustc.edu.cn
    • ‡Contact author: shenghuayu@bao.ac.cn
    • §Contact author: guozk@itp.ac.cn

    Phys. Rev. D 113, 104074 – Published 29 May, 2026

    DOI: https://doi.org/10.1103/cjl3-vzbc

    Abstract

    The mass transfer process is prevalent during the inspiral phase of compact binary systems. Detection of gravitational waves from the inspiral phase of binaries with white dwarfs will allow us to measure the mass transfer rate. Mass transfer effects provide additional contributions to the phase of gravitational waves, which can break the degeneracy between binary masses and redshift. Based on the analytic mass transfer rate to the first order post-Newtonian evolution of orbital angular frequency, we use the Fisher matrix to forecast the ability of DECIGO to measure the redshift of compact binaries with mass transfer. We conclude that for compact binary systems containing white dwarfs the redshift can be determined to an accuracy of 10% for z=0.01 with a SNR∼30.

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