arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2408.07686astro-ph.HEnucl-th
收藏

中子星并合遗迹的千新星辐射:对核状态方程的启示

Kilonova Emissions from Neutron Star Merger Remnants: Implications for Nuclear Equation of State

Kelsey A. Lund, Rahul Somasundaram, Gail C. McLaughlin, Jonah M. Miller, Matthew R. Mumpower, Ingo Tews

AI总结:

通过三维广义相对论磁流体动力学模拟和核合成建模,结合GW170817/AT2017gfo多信使观测,研究千新星电磁观测对核状态方程(EoS)的约束能力,得出1.4M⊙中子星半径和最大质量的约束范围。

摘要:

双中子星并合的多信使观测可提供核状态方程(EoS)的宝贵信息。本文研究千新星电磁观测对EoS的约束能力。为此,我们采用最先进的三维广义相对论磁流体动力学模拟和详细核合成建模,将观测光变曲线性质与吸积盘性质(进而与EoS)关联。利用该通用方法,我们通过GW170817/AT2017gfo的多信使观测,研究各类不确定性源对EoS推断的影响。我们将1.4太阳质量(M⊙)中子星半径约束在10.19≤R₁.₄≤13.0千米,最大质量约束为M_TOV≤3.06 M⊙。

英文摘要:

Multi-messenger observation of binary neutron-star mergers can provide valuable information on the nuclear equation of state (EoS). Here, we investigate to which extent electromagnetic observations of the associated kilonovae allow us to place constraints on the EoS. For this, we use state-of-the-art three-dimensional general-relativistic magneto-hydrodynamics simulations and detailed nucleosynthesis modeling to connect properties of observed light curves to properties of the accretion disk, and hence, the EoS. Using our general approach, we use multi-messenger observations of GW170817/AT2017gfo to study the impact of various sources of uncertainty on inferences of the EoS. We constrain the radius of a $\rm{1.4 M_\odot}$ neutron star to lie within $\rm{10.19\leq R_{1.4}\leq 13.0}$~km and the maximum mass to be $\rm{M_{TOV}\leq 3.06 M_\odot}$.

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。

↑