论文标题
裸露的崩溃，中子恒星二进制和快速光学瞬变的形成
Bare Collapse, Formation of Neutron Star Binaries and Fast Optical Transients
论文作者
论文摘要
{“裸露的崩溃”，裸露的恒星核向中子恒星的崩溃，具有很小的质量射血链，链接了两个看似无关的现象：二进制中子星（BNS）系统的形成以及快速和发光光学瞬变的观察结果。我们由于进化和合成等粒子裸露的恒星核的电子捕获而进行了计算。我们发现，塌陷导致{}光〜1.3太阳质量中子星和{an}在〜0.1c时的〜0.1太阳能质量的{an}射出。喷射的外壳由NI56组成，可以为超脱落的超新星供电。我们探索的模型可以解释大多数观察到的快速光耀斑，但不能解释最亮的耀斑。周围包围的核心崩溃会产生大量的Ni56并解释更明亮的耀斑。或者，由于非常有活力的喷射与倒塌前几天从祖细胞弹出的风的相互作用，可能会出现这些事件。
{"Bare collapse", the collapse of a bare stellar core to a neutron star with a very small mass ejection links two seemingly unrelated phenomena: the formation of binary neutron star (BNS) systems and the observations of fast and luminous optical transients. We carried out calculations of the collapse due to electron-capture of both evolutionary and synthetic isentropic bare stellar cores. We find that the collapse results in {the formation of} a light ~ 1.3 solar mass neutron star and {an} ejection of ~0.1 solar mass at ~0.1c. The outer shell of the ejecta is composed of Ni56 that can power an ultra-stripped supernova. The models we explored can explain most of the observed fast optical flares but not the brightest ones. Collapse of cores surrounded by somewhat more massive envelopes can produce larger amounts of Ni56 and explain brighter flares. Alternatively, those events can arise due to interaction of the very energetic ejecta with winds that were ejected from the progenitor a few days before the collapse.
