标题： 通过NSBH合并产生的引力波信号约束中子星中的标量荷 显示英文标题

标题： Constraining Scalar Charge in Neutron Stars through Gravitational Wave Signals from NSBH Mergers

摘要： 中子星（NS）为研究极端环境下的引力物理提供了绝佳机会。 在广义相对论（GR）的替代理论背景下，一个标量场非最小耦合到引力可以导致具有非零标量荷的“毛发状”NS解。 因此，至少包含一个“毛发状”NS的双星系统可以通过观测来检验GR。 在本工作中，我们分析了四个中子星黑洞（NS-BH）合并事件产生的引力波信号：GW190814， GW200115, GW200105和GW230529，以检验光速霍恩德斯基建理论预测的“毛发状”NS假设。 我们的分析限制了标量荷的大小在$10^{-3}$到$10^{-4}$的范围内，最严格的限制来自最近的GW230529事件。 此外，我们讨论了我们的结果与文献中找到的标量化NS解之间的关系。 显示英文摘要

摘要： Neutron stars (NS) offer an exceptional opportunity to investigate gravitational physics in extreme environments. In the context of alternative theories of General Relativity (GR), a scalar field non-minimally coupled to gravity can lead to "hairy" NS solutions with a non-zero scalar charge. As a result, binary systems containing at least one "hairy" NS can serve as probes for testing GR through observations. In this work, we analyze the gravitational wave signals from four neutron-star-black-hole (NS-BH) merger events: GW190814, GW200115, GW200105, and GW230529 examine the "hairy" NS hypothesis predicted by the luminal Horndeski theories. Our analysis constrains the scalar charge to be on the order of $10^{-3}$ to $10^{-4}$, with the most stringent limit arising from the recent GW230529 event. In addition, we discuss the implications of our results in relation to the scalarized NS solutions found in the literature.