AI 中文总结
该研究探究核物态方程的变化对磁旋转恒星爆炸动力学及多信使辐射的影响，利用Aenus-Alcar代码模拟发现EoS的热与成分特性对爆炸特征有关，强调结合引力波与中微子观测的重要性。
AI 中文摘要
大质量恒星生命末期的引力坍缩会引发剧烈的超新星爆炸，产生致密天体，调控宿主星系的动力学，并参与宇宙化学演化。在快速自转和强磁场存在的情况下，这类爆炸可达到极高能量，解释超亮超新星和长伽马射线暴等天体。我们研究核物态方程（EoS）的变化对磁旋转爆炸及其多信使辐射（包括中微子和引力波）的影响。EoS的刚度、成分及有限温度行为的差异会影响坍缩、 bounce（ bounce 在此处为天体物理领域的专业术语，指坍缩反弹过程）和喷流启动阶段。我们使用包含相对论磁流体动力学、双矩中微子输运、中微子-物质相互作用及广义相对论修正的Aenus-Alcar代码，采用不同EoS进行轴对称模拟。所有模型均始于相同的太阳金属丰度、零龄主序质量为20倍太阳质量、偶极磁场及壳层自转剖面的超新星前身星。不同EoS会在爆炸动力学、原中子星性质、抛射物质量及多信使信号上产生显著差异。我们的结果表明，磁旋转核心坍缩超新星的特征不仅依赖于EoS的冷刚度，还取决于其热和成分特性，凸显了结合引力波与中微子观测来约束致密物质物理及爆炸机制的重要性。
英文摘要
The gravitational collapse of massive stars at the end of their life leads to powerful supernova explosions that produce compact objects, regulate the dynamics of host galaxies, and contribute to cosmic chemical evolution. In the presence of fast rotation and strong magnetic fields, such explosions can reach extreme energies, explaining sources such as hypernovae and long gamma-ray bursts. We investigate the impact of variations in the nuclear equation of state (EoS) on magnetorotational explosions and their multimessenger emission, including neutrinos and gravitational waves. Differences in stiffness, composition, and finite-temperature behavior of the EoS affect the collapse, bounce, and jet-launching phases. Using the Aenus-Alcar code, which includes relativistic magnetohydrodynamics, two-moment neutrino transport, neutrino-matter interactions, and general-relativistic corrections, we perform axisymmetric simulations with different EoSs. All models start from the same pre-supernova progenitor with solar metallicity, a zero-age main sequence mass of 20 solar masses, a dipolar magnetic field, and a shellular rotation profile. The different EoSs produce significant variations in explosion dynamics, proto-neutron star properties, ejecta mass, and multimessenger signals. Our results show that magnetorotational core-collapse supernova signatures depend not only on the cold stiffness of the EoS, but also on its thermal and compositional properties, highlighting the importance of combining gravitational-wave and neutrino observations to constrain dense matter physics and the explosion mechanism.
CommentsAccepted for publication in Astronomy & Astrophysics. 21 pages, 17 figures
Journal refA&A, 713, A341 (2026)
