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arXiv 2407.02584gr-qcnucl-th
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次领头阶耗散潮汐效应及利用引力波数据对耗散潮汐形变率的约束

Dissipative tidal effects to next-to-leading order and constraints on the dissipative tidal deformability using gravitational wave data

Abhishek Hegade K. R., Justin L. Ripley, Nicolás Yunes

AI总结:

本研究首次推导含耗散潮汐作用双星的1PN轨道修正与引力波相位次领头阶修正,并用GW170817数据首次约束了双星各组分的耗散潮汐形变率,给出90%置信度下的上限。

摘要:

耗散潮汐相互作用可通过引力波观测用于探测中子星的非平衡物理。本文首次给出了包含具有耗散贡献潮汐相互作用天体的双星系统轨道动力学的后牛顿(PN)修正。我们推导了质心系下1PN精度的运动方程,以及适用于耗散潮汐相互作用的广义能量平衡定律。我们阐明了因轨道能量吸收导致的质量与能量损失如何改变轨道动力学,并推导了初始无自旋组分的准圆轨道双星系统引力波相位的次领头阶修正。随后我们利用该波形模型,首次基于真实数据约束了产生GW170817事件的双星系统各组分的各自耗散潮汐形变率。我们发现,在90%置信度下,GW170817数据要求$Ξ_{1} \lesssim 1121$且$Ξ_{2} \lesssim 1692$,其中$Ξ_{1,2}$为产生GW170817事件的双星主、次组分的各自潮汐形变率。

英文摘要:

Dissipative tidal interactions can be used to probe the out-of-equilibrium physics of neutron stars using gravitational wave observations. In this paper, we present the first post-Newtonian (PN) corrections to the orbital dynamics of a binary system containing objects whose tidal interactions have a dissipative contribution. We derive the 1PN-accurate equations of motion in the center-of-mass frame and a generalized energy-balance law that is valid for dissipative tidal interactions. We show how mass and energy loss due to the absorption of orbital energy change the orbital dynamics and derive the next-to-leading order correction to the gravitational wave phase of a binary system in a quasi-circular orbit containing initially non-spinning components. We then use this waveform model to constrain, for the first time, the individual dissipative tidal deformabilities of each of the binary components that generated the GW170817 event using real data. We find that the GW170817 data requires $Ξ_{1} \lesssim 1121$ and $Ξ_{2} \lesssim 1692$ at 90\% confidence, where $Ξ_{1,2}$ are the individual tidal deformabilities of the primary and secondary binary components that produced the GW170817 event.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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