当前超新星遗迹研究中的若干热点问题

发布时间：2019-05-17 12:46

【摘要】：对银河系内历史性超新星"回光"(light echoes)的观测是研究年轻超新星遗迹的重要手段。通过对"回光"进行观测,可以确认其前身星的物理特性,揭示恒星晚期演化过程和其星周介质的三维空间分布。历史性超新星直接"回光"极其暗弱,对其探测最近几年才因新技术的应用而得以实现。综述了河内超新星遗迹包括仅有的已探测到回光现象的两颗年轻超新星遗迹——第谷(SN1572)和仙后座A(CasA)的最新研究进展。研究结果有利于更好地理解Ⅰ型和Ⅱ型超新星的性质,区别两类超新星的爆发机制,加深对超新星的核合成、重元素合成、星系形成和演化、暗能量等的了解。讨论了利用回光观测可以进一步深入开展的研究课题。
[Abstract]:The observation of the historic supernova (light echoes) in the Milky way is an important means to study the remains of the young supernova. By observing the "return light", the physical characteristics of its predecessor star can be confirmed, and the late evolution process of the star and the three-dimensional spatial distribution of its circumferential medium can be revealed. The direct "backlight" of the historic supernova is extremely dim, and the detection of the supernova has only been realized in recent years because of the application of the new technology. In this paper, the latest research progress of Hanoi supernova remains, including the only two young supernova relics, SN1572 and A (CasA), which have been detected to return light, is reviewed. The results are helpful to better understand the properties of type I and type II supernova, distinguish the explosion mechanism of the two types of supernova, and deepen the understanding of nuclear synthesis, heavy element synthesis, galaxy formation and evolution, dark energy and so on. The research topics that can be further carried out by using backlight observation are discussed.
【作者单位】：中国科学院国家天文台;卡尔加里大学物理天文系;湘潭大学材料与光电物理学院;
【基金】：国家自然科学基金资助项目(10903007)
【分类号】：P145.3

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