GW170817合并事件对核物质状态方程的约束

F. Burgio, Antonio Figura, H. Schulze, Jin-Biao Wei
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引用次数: 0

摘要

GW170817中子星合并事件的探测激起了对核物质状态方程理解的激烈研究活动。本文特别比较了重离子碰撞得到的压力-密度关系与NS合并事件的分析。此外,我们还介绍了最近使用核星和混合星形态的各种微观状态方程计算中子星的转动惯量和潮汐变形能力,并确认了几个普遍关系。我们还讨论了GW170817确定的NS半径的最新约束条件,并找到了12 ~ 13 km之间的兼容半径,从而确定了合适的状态方程。
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Constraints from the GW170817 merger event on thenuclear matter equation of state
The detection of the GW170817 neutron star merger event has incited an intense research activity towards the understanding of the nuclear matter equation of state. In this paper we compare in particular the pressure-density relation obtained from heavy-ion collisions with the analysis of the NS merger event. Moreover, we present recent calculations of neutron star's moment of inertia and tidal deformability using various microscopic equations of state for nuclear and hybrid star configurations, and confirm several universal relations. We also discuss the recent constraints for the NS radii determined by GW170817, and find compatible radii between 12 and 13 kilometers, thus identifying the suitable equations of state.
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