标题： 1.4 $M_{\odot}$ 中子星碰撞：动态的还是准平衡的？ 显示英文标题

标题： Collision of 1.4 $M_{\odot}$ Neutron Stars: Dynamical or Quasi-Equilibrium?

摘要： Shapiro 提出了一个猜想，指出在正面对撞（从无限远处下落）的中子星在中微子冷却之前不会坍缩成黑洞，无论中子星的质量如何。 在之前的一篇论文中，我们进行了一项数值模拟，展示了一个反例，基于 1.4 $M_{\odot}$ 中子星，并提供了一个分析，解释了为什么 Shapiro 的论点不适用于这种情况。 Shapiro 最近的一篇论文提出了一个论点，认为目前可达到的精度下，1.4 $M_{\odot}$ 对撞的数值模拟无法推翻该猜想。 我们在本文中表明，这个论点不适用，原因与 Shapiro 猜想不适用于 1.4 $M_{\odot}$ 中子星对撞一样，即该对撞过于动态，无法通过准平衡论点来处理。 显示英文摘要

摘要： Shapiro put forth a conjecture stating that neutron stars in head-on collisions (infalling from infinity) will not collapse to black holes before neutrino cooling, independent of the mass of the neutron stars. In a previous paper we carried out a numerical simulation showing a counter example based on 1.4 $M_{\odot}$ neutron stars, and provided an analysis explaining why Shapiro's argument was not applicable for this case. A recent paper by Shapiro put forth an argument suggesting that numerical simulations of the 1.4 $M_{\odot}$ collisions could not disprove the conjecture with the accuracy that is presently attainable. We show in this paper that this argument is not applicable for the same reason that the Shapiro conjecture is not applicable to the 1.4 $M_{\odot}$ neutron star collision, namely, the collision is too dynamical to be treated by quasi-equilibrium arguments.