论文标题
核心倒塌超新星几小时后，从中子之星伴侣中模拟喷气机
Simulating jets from a neutron star companion hours after a core collapse supernova
论文作者
论文摘要
我们进行了三维流体动力学模拟，以探索中性恒星（NS）伴侣与IC类型或IB型IB核心崩溃超新星（CCSN）的相互作用，该爆炸后几个小时与CCSN的射击发射了几个小时。我们假设从爆炸恒星通过积聚磁盘从较慢的内部喷射质量积聚的NS伴侣会产生质量，并且磁盘发射了两个相反的喷气机。尽管喷气机的能量仅是喷射总能量的百分之一，但它与喷射较慢的内部部分的能量相当。我们发现喷气机将一个低密度热气泡膨胀到喷射的一侧，并且这种气泡会膨胀以影响弹出气体，直至v = 3500 km/s的膨胀速度。震后喷气机的材料会形成大量的子午线和小涡流。喷射和喷气机的震后气体之间的边界不稳定。不稳定性和涡流将喷气机的气体与弹出气体混合在一起。我们期望这样的热气泡有助于CCSNE的光曲线，这些曲线是二进制NS系统的祖细胞，特别是气泡侧面的观察者。
We conduct three-dimensional hydrodynamical simulations to explore the interaction of jets that a neutron star (NS) companion to a type Ic or type Ib core collapse supernova (CCSN) launches few hours after explosion with the ejecta of the CCSN. We assume that a NS companion at 5Ro from the exploding star accretes mass from the slower inner ejecta through an accretion disk, and that the disk launches two opposite jets. Although the energy of the jets is only about one per cent of the total energy of the ejecta, it is comparable to the energy of the slower inner part of the ejecta. We find that the jets inflate one low-density hot bubble to one side of the ejecta, and that this bubble expands to influence ejecta gas up to expansion velocities of v=3500 km/s. The post-shock jets' material develops a large meridional flow and small vortexes. The boundary between the ejecta and jets' post-shock gases is unstable. The instabilities and vortexes mix jets' gas with the ejecta. We expect such a hot bubble to contribute to the light curve of CCSNe that are progenitors of binary NS systems, in particular to observers on the side of the bubble.
