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arXiv 2109.01752astro-ph.HEastro-ph.SR
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与合并触发的核心坍缩超新星一致的瞬态射电源

A transient radio source consistent with a merger-triggered core collapse supernova

Dillon Z. Dong, Gregg Hallinan, Ehud Nakar, Anna Y. Q. Ho, Andrew K. Hughes, Kenta Hotokezaka, Steve T. Myers, Kishalay De, Kunal Mooley, Vikram Ravi, Assaf Hor… 展开作者

Dillon Z. Dong, Gregg Hallinan, Ehud Nakar, Anna Y. Q. Ho, Andrew K. Hughes, Kenta Hotokezaka, Steve T. Myers, Kishalay De, Kunal Mooley, Vikram Ravi, Assaf Horesh, Mansi M. Kasliwal, Shri R. Kulkarni

摘要:

当大质量恒星核心的放热融合停止时,通常是由于核燃料耗尽,就会发生核心坍缩超新星。理论预测,融合可能会提前中断,因为恒星与一个紧凑的双星伴星合并。我们报告了在甚大天阵巡天中发现的一个明亮的射电瞬变,VT J121001+495647。无线电发射与超新星喷出物与致密物质壳层的碰撞一致,可能是在爆炸前的几个世纪通过双星相互作用喷出的。我们将这颗超新星与档案X射线瞬变联系起来,这意味着爆炸期间发射了一股相对论性喷流。早期的相对论性喷流和晚期密集相互作用的结合与合并驱动爆炸的预期是一致的。

英文摘要:

A core-collapse supernova occurs when exothermic fusion ceases in the core of a massive star, typically due to exhaustion of nuclear fuel. Theory predicts that fusion could be interrupted earlier, by merging of the star with a compact binary companion. We report a luminous radio transient, VT J121001+495647, found in the Very Large Array Sky Survey. The radio emission is consistent with supernova ejecta colliding with a dense shell of material, potentially ejected by binary interaction in the centuries prior to explosion. We associate the supernova with an archival X-ray transient, which implies a relativistic jet was launched during the explosion. The combination of an early relativistic jet and late-time dense interaction is consistent with expectations for a merger-driven explosion.

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