微星系中三维自旋-速度排列的第一个证据
The first evidence for three-dimensional spin-velocity alignment in pulsars
摘要：
在发现超新星并确认其与超新星爆发的关联50多年后，超新星的初始自旋和速度的起源在很大程度上仍然是个谜。几百公里/秒的典型空间速度被归因于超新星喷出物或中微子发射的不对称性所导致的“反冲”。观测结果显示，年轻恒星的脉冲星空间速度和自旋轴有很强的一致性，但到目前为止，这些比较仅限于二维。我们在这里报告的自旋和速度矢量之间的三维对齐的第一个证据，主要是基于500米口径球面射电望远镜的观测脉冲星PSR~ J 0538 +2817及其相关的超新星遗迹S147。通过对这些观测结果和相关观测结果的分析，我们能够确定脉冲星在超新星遗迹中的位置，从而确定其径向速度。目前对超新星爆炸的模拟很难产生这样的三维排列。我们的结果，这取决于前所未有的灵敏度的新的观察，增加了另一个层面的有趣的脉冲星自旋轴和出生踢方向之间的相关性，从而加深了周围的中子星的诞生之谜。
英文摘要：
More than 50 years after the discovery of pulsars and confirmation of their association with supernova explosions, the origin of the initial spin and velocity of pulsars remains largely a mystery. The typical space velocities of several hundred km/s have been attributed to "kicks" resulting from asymmetries either in the supernova ejecta or in the neutrino emission. Observations have shown a strong tendency for alignment of the pulsar space velocity and spin axis in young pulsars but, up to now, these comparisons have been restricted to two dimensions. We report here the first evidence for three-dimensional alignment between the spin and velocity vectors, largely based on observations made with the Five-hundred-meter Aperture Spherical radio Telescope of the pulsar PSR~J0538+2817 and its associated supernova remnant S147. Analysis of these and related observations has enabled us to determine the location of the pulsar within the supernova remnant and hence its radial velocity. Current simulations of supernova explosions have difficulty producing such three-dimensional alignment. Our results, which depend on the unprecedented sensitivity of the new observations, add another dimension to the intriguing correlation between pulsar spin-axis and birth-kick directions, thus deepening the mysteries surrounding the birth of neutron stars.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
