Parameter estimation for Einstein-dilaton-Gauss-Bonnet gravity with ringdown signals

作     者：邵才莹 胡宇 邵成刚 Cai-Ying Shao;Yu Hu;Cheng-Gang Shao

作者机构：MOE Key Laboratory of Fundamental Physical Quantities MeasurementHubei Key Laboratory of Gravitation and Quantum PhysicsPGMFand School of PhysicsHuazhong University of Science and TechnologyWuhan 430074China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2023年第47卷第10期

页      面：213-224页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：the National Key R&D Program of China(2022YFC2204602) the Natural Science Foundation of China(11925503) 

主　　题：Einstein-dilaton-Gauss-Bonnet gravity quasinormal modes space-based gravitational-wave detection parameter estimation 

摘      要：Future space-based gravitational-wave detectors will detect gravitational waves with high sensitivity in the millihertz frequency band,providing more opportunities to test theories of gravity than ground-based *** study of quasinormal modes(QNMs)and their application in gravity theory testing have been an important aspect in the field of gravitational *** this study,we investigate the capability of future space-based gravitational wave detectors,such as LISA,TaiJi,and TianQin,to constrain the dimensionless deviating parameter for Einsteindilaton-Gauss-Bonnet(EdGB)gravity with ringdown signals from the merger of binary black *** ringdown signal is modeled by the two strongest QNMs in EdGB *** time-delay interferometry,we calculate the signal-to-noise ratio of different space-based detectors for ringdown signals to analyze their *** Fisher information matrix is employed to analyze the accuracy of parameter estimation,with particular focus on the dimensionless deviating parameter for EdGB *** impact of the parameters of gravitational wave sources on the estimation accuracy of the dimensionless deviating parameter is also *** find that the constraint ability of EdGB gravity is limited because the uncertainty of the dimensionless deviating parameter increases with a decrease in the dimensionless deviating *** and TaiJi offer more advantages in constraining the dimensionless deviating parameter to a more accurate level for massive black holes,whereas TianQin is more suited to less massive black *** Bayesian inference method is used to perform parameter estimation on simulated data,which verifies the reliability of the conclusion.