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 field.The central black hole,which reduces to a Kerr one,is circularly spiralled by a scalar-charged spinning secondary body on the equatorial plane.The 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 large.Our findings suggest that secondary spin detection is more feasible when the primary mass is not large,and TianQin is the optimal choice for detection.
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(Center for Gravitation and Cosmology,College of Physical Science and Technology,Yangzhou University,Yangzhou 225009,China;Escola de Engenharia de Lorena,Universidade de São Paulo,Lorena,SP 12602-810,Brazil;Shanghai Frontier Research Center for Gravitational Wave Detection,Shanghai Jiao Tong University,Sha;nghai 200240,China 4 School of Aeronautics and Astronautics,Shanghai Jiao Tong University,Shanghai 200240,China;School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China;Department of Physics,School of Physical Science and Technology,Ningbo University,Ningbo 315211,China)
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)。
