标题： 脉冲星 PSR J0737-3039A/B 的形成 显示英文标题

标题： The Formation of the Double Pulsar PSR J0737-3039A/B

摘要： 最近对双脉冲星 J0737-3039A/B 的时间观测表明，其横向速度非常低，仅为 10 km/s，并且几乎位于银河系平面内。 有了这一新信息，我们严格重新审视了该系统的演化历史和形成过程，确定了超新星前伴星质量、超新星冲击速度以及超新星前后轨道平面之间的错位角度的估计值。 我们发现最近形成的“B”脉冲星的前身星可能小于 2 MSun，这支持了这一物体可能并未在涉及铁核坍缩的正常超新星中形成的建议。 同时，超新星冲击速度很可能是非零的。 与双中子星双星 B1534+12 的演化历史进行比较，表明这些系统的前身星可能存在一组可能的参数范围，这应在未来的双星种群合成以及对短伽马射线暴事件的速率和空间分布的预测中加以考虑。 显示英文摘要

摘要： Recent timing observations of the double pulsar J0737-3039A/B have shown that its transverse velocity is extremely low, only 10 km/s, and nearly in the Plane of the Galaxy. With this new information, we rigorously re-examine the history and formation of this system, determining estimates of the pre-supernova companion mass, supernova kick and misalignment angle between the pre- and post-supernova orbital planes. We find that the progenitor to the recently formed `B' pulsar was probably less than 2 MSun, lending credence to suggestions that this object may not have formed in a normal supernova involving the collapse of an iron core. At the same time, the supernova kick was likely non-zero. A comparison to the history of the double-neutron-star binary B1534+12 suggests a range of possible parameters for the progenitors of these systems, which should be taken into account in future binary population syntheses and in predictions of the rate and spatial distribution of short gamma-ray burst events.