High-energy Neutrinos from Stellar Explosions in Active Galactic Nuclei Accretion Disks
High-energy Neutrinos from Stellar Explosions in Active Galactic Nuclei Accretion Disks
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DOI：
10.3847/2041-8213/ac1a17
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发表时间：
2021-07
期刊：
影响因子：
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通讯作者：
Jin-Ping Zhu;Kai Wang;Bing Zhang
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文献类型：
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作者：
Jin-Ping Zhu;Kai Wang;Bing Zhang
一些灾难性的恒星爆炸，如超新星（SNe），紧凑的双合并，和微潮破裂事件，被认为是嵌入在吸积盘的活动星系核（AGN）。我们表明，高能中微子可以有效地产生通过pp之间的相互作用的冲击加速的宇宙射线和AGN盘材料后不久，爆炸喷出物冲击打破了磁盘。AGN恒星爆炸是中微子和电磁（EM）多信使联合观测的理想目标。未来对中微子爆发的电磁跟踪观测可以帮助我们寻找尚未发现的活动星系核恒星爆炸。我们认为活动星系核恒星爆炸可能是重要的天体物理中微子源。活动星系核恒星爆炸对观测到的弥散中微子背景的贡献取决于活动星系核盘中这些事件的不确定的局部事件率密度。通过考虑热核SNe，核心坍缩SNe，γ射线暴相关的SNe，kilonovae，并在AGN盘与已知的理论本地事件率密度的扼流GRB，我们表明，这些事件可能有助于10%左右的观察到的扩散中微子背景。
Some catastrophic stellar explosions, such as supernovae (SNe), compact binary coalescences, and microtidal disruption events, are believed to be embedded in the accretion disks of active galactic nuclei (AGNs). We show high-energy neutrinos can be produced efficiently through pp interactions between shock-accelerated cosmic rays and AGN disk materials shortly after the explosion ejecta shock breaks out of the disk. AGN stellar explosions are ideal targets for joint neutrino and electromagnetic (EM) multimessenger observations. Future EM follow-up observations of neutrino bursts can help us search for yet-discovered AGN stellar explosions. We suggest that AGN stellar explosions could potentially be important astrophysical neutrino sources. The contribution from AGN stellar explosions to the observed diffuse neutrino background depends on the uncertain local event rate densities of these events in AGN disks. By considering thermonuclear SNe, core-collapse SNe, gamma-ray burst associated SNe, kilonovae, and choked GRBs in AGN disks with known theoretical local event rate densities, we show that these events may contribute to ≲10% of the observed diffuse neutrino background.