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arXiv 2205.13670astro-ph.HEastro-ph.SR
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Ia型超新星遗迹中类主序星幸存伴星的演化

Evolution of Main-Sequence-like Surviving Companions in Type Ia Supernova Remnants

Shiau-Jie Rau, Kuo-Chuan Pan

摘要:

最近对Ia型超新星爆发的理论和数值研究表明,非简并的伴星可以在超新星撞击过程中存活下来,并且可以在附近的超新星遗迹中检测到。然而,观测工作显示,从标准的单简并通道幸存的同伴的存在不太有希望的证据。自旋上升/自旋下降模型是解释未检测到幸存同伴的可能机制。在这些模型中,自旋上升阶段可能会增加爆炸的临界质量,导致超rasekhar质量爆炸,而自旋下降阶段可能会导致额外的质量损失和角动量重新分布。由于旋转白矮星延迟爆炸的自旋下降时间尺度尚不清楚,本文通过超新星碰撞和幸存同伴随后的恒星演化的二维流体动力学模拟,探索了一个巨大的主序类幸存同伴的参数空间。提供了描述质量剥离效应、超新星反冲和超新星加热深度的紧密的普适关系。我们的研究结果表明,尚未检测到幸存的同伴从附近的Ia型超新星遗迹的观测可能有利于低质量的同伴,短的二元分离,或更强的超新星爆炸能量比标准的单简并通道。

英文摘要:

Recent theoretical and numerical studies of Type Ia supernova explosion within the single-degenerate scenario suggest that the non-degenerate companions could survive during the supernova impact and could be detectable in nearby supernova remnants. However, observational efforts show less promising evidence on the existence of surviving companions from the standard single-degenerate channels. The spin-up/spin-down models are possible mechanisms to explain the non-detection of surviving companions. In these models, the spin-up phase could increase the critical mass for explosion, leading to a super-Chandrasekhar mass explosion, and the spin-down phase could lead to extra mass loss and angular momentum redistribution. Since the spin-down timescale for the delayed explosion of a rotating white dwarf is unclear, in this paper, we explore a vast parameter space of main-sequence-like surviving companions via two-dimensional hydrodynamic simulations of supernova impact and the subsequent stellar evolution of surviving companions. Tight universal relations to describe the mass stripping effect, supernova kick, and depth of supernova heating are provided. Our results suggest that the not-yet detected surviving companions from observations of nearby Type Ia supernova remnants might favor low mass companions, short binary separation, or stronger supernova explosion energies than the standard singe-degenerate channels.

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。

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