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arXiv 2005.09793astro-ph.HEphysics.plasm-ph
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星系外围的夸克新星:对快速射电暴现象的一种解释

Quark-Novae in the outskirts of galaxies: An explanation of the Fast Radio Burst phenomenon

Rachid Ouyed, Denis Leahy, Nico Koning

摘要:

我们发现,古老的孤立中子星的集团和星系团经历了夸克新星阶段(QN:一个爆炸性的转变为夸克星)可能是FRB的来源。超相对论QN喷出物的数百万个碎片中的每一个都提供了一个无碰撞的等离子体,周围的介质(星系/晕,群内/群内介质)充当相对论等离子体束。布曼和韦伯不稳定性,连续诱导的光束中的片段,产生粒子聚束和观察到的相干发射在GHz的频率与相应的注量在Jy ms范围内。持续时间、频率漂移和速率与观测到的FRB特性一致。重复(以分钟到几个月的时间尺度)是由于看到多个碎片,每个碎片在不同的方向发射,并在不同的时间进入。单一(非重复)FRB,发生在只有来自主要碎片的发射在探测器的灵敏度范围内时。恢复了FRB 121102(其活动年份)和FRB 180916.J0158 + 65(其16天周期)的关键属性。SGR 1935 + 2154和FRB 200428之间的时空重合在我们的模型中找到了解释。我们给出可检验的预测。

英文摘要:

We show that old isolated neutron stars in groups and clusters of galaxies experiencing a Quark-Nova phase (QN: an explosive transition to a quark star) may be the source of FRBs. Each of the millions of fragments of the ultra-relativistic QN ejecta provides a collisionless plasma for which the ambient medium (galactic/halo, the intra-group/intra-cluster medium) acts as a relativistic plasma beam. The Buneman and the Weibel instabilities, successively induced by the beam in the fragment, generate particle bunching and observed coherent emission at GHz frequency with a corresponding fluence in the Jy ms range. The duration, frequency drift and the rate are in agreement with observed properties of FRBs. Repeats (on timescales of minutes to months) are due to seeing multiple fragments each beaming at a different direction and coming in at different times. Single (non-repeating) FRBs, occur when only emission from the primary fragment is within the detector's sensitivity. Key properties of FRB 121102 (its years of activity) and of FRB 180916.J0158+65 (its 16 day period) are recovered. The spatial and temporal coincidence between SGR 1935+2154 and FRB 200428 finds an explanation in our model. We give testable predictions.

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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