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arXiv 2409.18567astro-ph.HE
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AGN吸积盘中双黑洞并合产生的引力波相关的电磁耀斑

Electromagnetic Flares Associated with Gravitational Waves from Binary Black Hole Mergers in AGN Accretion Disks

Zhi-Peng Ma, Kai Wang, Qingwen Wu, Jian-Min Wang

AI总结:

本文研究了AGN盘内双黑洞并合产生的引力波事件GW190521相关的电磁耀斑,通过动力学模型分析外流、喷流头、喷流茧和盘茧四个组分的激波突破与冷却发射,发现外流或盘茧可解释观测信号,并给出了两者的最佳拟合光变曲线和光谱能量分布。

摘要:

引力波(GW)事件GW190521可能源自活动星系核(AGN)盘内的双黑洞(BBH)并合,并与光学耀斑ZTF19abanrhr相关。BBH并合产生的残余黑洞可以喷出喷流和外流,随后与盘介质发生相互作用,这可能是产生相关电磁辐射的原因。在这封信中,我们研究了由AGN盘内残余黑洞驱动的四个潜在组分的激波突破和随后的冷却发射:外流、喷流头、喷流茧和盘茧。利用动力学模型和观测约束,对于GW190521,我们确定了每个组分的参数空间,并得出结论:外流或盘茧都可能产生观测到的电磁信号,其中盘茧需要更极端的参数。我们给出了这两个组分的最佳拟合光变曲线和光谱能量分布(SEDs),表明外流的峰值发射在紫外波段,而盘茧的发射范围从光学到紫外。

英文摘要:

The gravitational wave (GW) event GW190521, likely originating from a binary black hole (BBH) merger within an active galactic nucleus (AGN) disk, is associated with the optical flare ZTF19abanrhr. The remnant BHs from BBH mergers can launch the jet and outflow and then interact with the disk medium, which can be responsible for the associated electromagnetic radiations. In this \textit{letter}, we examine the shock breakout and subsequent cooling emissions from four potential components: the outflow, jet head, jet cocoon, and disk cocoon, all driven by the remnant BH within the AGN disk. Using dynamic models and observational constraints, for GW190521, we identify the parameter space for each component and conclude that either the outflow or the disk cocoon could produce the observed electromagnetic signal, with the disk cocoon requiring more extreme parameters. We present best-fit light curves and spectral energy distributions (SEDs) for both components, showing peak emissions in the UV band for the outflow and spanning optical to UV for the disk cocoon.

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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