Ⅰ型X射线暴和中子星周围物质的相互作用研究进展

The Research Progress of the Interaction between Type I X-ray Burst and Matter around Neutron Stars

Ⅰ型X射线暴是发生在中子星小质量X射线双星表面的不稳定核燃烧过程。Ⅰ型X射线暴的辐射可对中子星周围的物质产生显著影响。文章回顾了Ⅰ型X射线暴与中子星周围物质之间的相互作用的观测结果和理论解释,包括坡印亭-罗伯逊效应引起的吸积率增加、Ⅰ型X射线暴能谱中的吸收限特征、吸积盘反射、千赫兹准周期震荡信号的变化、冕冷却导致的硬X射线缺失等;此外,还介绍了NICER卫星相关观测的最新进展。

Type I X-ray bursts are unstable nuclear burning processes that occur on the surface of neutron star in low-mass X-ray binary.The radiation of type I X-ray bursts can have significant effects on matter around neutron stars.We review the observations and theoretical interpretations of the interaction between type I X-ray bursts and matter around neutron stars,including the increased accretion rate caused by the Poynting-Robertson effect,the absorption edge features in the burst spectra,the accretion disk reflection features,the disappearance and emergence of the kHz QPO(quasi-periodic oscillation)signal during bursts,the hard X-ray flux deficit due to the coronal cooling.Furthermore,we also present recent progress from NICER observations.