Detecting secondary spin with extreme mass ratio inspirals in scalar-tensor theory

作     者：Hong Guo Chao Zhang Yunqi Liu Rui-Hong Yue Yun-Gui Gong Bin Wang 郭弘;张超;刘云旗;岳瑞宏;龚云贵;王斌

作者机构：Center for Gravitation and CosmologyCollege of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China Escola de Engenharia de LorenaUniversidade de São PauloLorenaSP 12602-810Brazil Shanghai Frontier Research Center for Gravitational Wave DetectionShanghai Jiao Tong UniversitySha nghai 200240China 4 School of Aeronautics and AstronauticsShanghai Jiao Tong UniversityShanghai 200240China School of PhysicsHuazhong University of Science and TechnologyWuhan 430074China Department of PhysicsSchool of Physical Science and TechnologyNingbo UniversityNingbo 315211China 

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

年 卷 期：2024年第48卷第9期

页      面：210-224页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：Supported by the National Key Research and Development Program of China (2020YFC2201400) Yun-Gui Gong acknowledges the support by the National Key Research and Development Program of China (2020YFC2201504) Chao Zhang was supported by the China Postdoctoral Science Foundation (2023M742297) Brazilian agencies Funda??o de AmparoàPesquisa do Estado de S?o Paulo (FAPESP) Funda??o de AmparoàPesquisa do Estado do Rio de Janeiro (FAPERJ) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordena??o de Aperfei?oa-mento de Pessoal de Nível Superior (CAPES) 

主　　题：Gravitational wave EMRI secondary spin scalar radiation 

摘      要：In this study,we investigate the detectability of the secondary spin in an extreme mass ratio inspiral(EMRI) system within a modified gravity model coupled with a scalar *** central black hole,which reduces to a Kerr one,is circularly spiralled by a scalar-charged spinning secondary body on the equatorial *** analysis reveals that the presence of the scalar field amplifies the secondary spin effect,allowing for a lower limit of the detectability and an improved resolution of the secondary spin when the scalar charge is sufficiently *** findings suggest that secondary spin detection is more feasible when the primary mass is not large,and TianQin is the optimal choice for detection.