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arXiv 2303.16902astro-ph.HE
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双星驱动超新星模型中的伽马射线暴-超新星关联

GRB-SN Association within the Binary-Driven Hypernova Model

Y. Aimuratov, L. M. Becerra, C. L. Bianco, C. Cherubini, M. Della Valle, S. Filippi, Liang Li, R. Moradi, F. Rastegarnia, J. A. Rueda, R. Ruffini, N. Sahakyan, Y. Wang, S. R. Zhang

AI总结:

本文在双星驱动超新星模型下研究长伽马射线暴与Ic型超新星的关联,依据双星轨道周期划分三类BdHN事件,并报告24个相关超新星及七个新观测阶段,为银河系内短寿命双星前身天体研究开辟新方向。

摘要:

在双星驱动超新星(BdHN)模型框架内,研究了长伽马射线暴(GRBs)瞬时辐射之后出现的Ic型超新星(SNe Ic)的观测现象。在该模型中,伽马射线暴起源于一个由约10倍太阳质量的碳氧(CO)星和一颗中子星(NS)组成的双星系统。CO核心坍缩触发爆发,导致形成一颗中心为快速自转的新生中子星(νNS)的超新星。其演化强烈依赖于双星轨道周期P_bin。当P_bin约为5分钟时,发生BdHN I型事件,能量为10^52–10^54尔格。超新星抛射物吸积到中子星上导致其坍缩,形成黑洞(BH),从而产生MeV/GeV辐射。当P_bin约为10分钟时,发生BdHN II型事件,能量为10^50–10^52尔格;当P_bin约为数小时时,发生BdHN III型事件,能量低于10^50尔格。在BdHN II和III型事件中,不会形成黑洞。在所有BdHN事件中,1–1000毫秒的νNS通过同步辐射产生X射线-光学-射电余辉。超新星遵循独立的演化路径,成为由镍衰变供能的Ic型超新星,可在伽马射线暴瞬时辐射之后被观测到。我们报告了24个与BdHN相关的Ic型超新星。它们的光学峰值光度和出现时间相似,且与相关联的伽马射线暴无关。从先前识别的380个红移高达z=8.2的BdHN I型事件中,我们分析了四个带有相关超新星的例子。通过多波段河外观测,我们识别出七个新的阶段(Episodes),这些阶段在理论上已得到解释,但幸运的是尚未在银河系源中被探测到,从而开辟了新的研究领域。需要进一步完善星族合成模拟,以绘制我们银河系内此类短寿命双星系统的前身天体分布。

英文摘要:

The observations of supernovae (SNe) Ic occurring after the prompt emission of long gamma-ray bursts (GRBs) are addressed within the binary-driven hypernova (BdHN) model where GRBs originate from a binary composed of a $\sim10M_\odot$ carbon-oxygen (CO) star and a neutron star (NS). The CO core collapse gives the trigger, leading to a hypernova with a fast-spinning newborn NS ($ν$NS) at its center. The evolution depends strongly on the binary period, $P_{\rm bin}$. For $P_{\rm bin}\sim5$min, BdHNe I occur with energies $10^{52}$--$10^{54}$erg. The accretion of SN ejecta onto the NS leads to its collapse, forming a black hole (BH) originating the MeV/GeV radiation. For $P_{\rm bin}\sim 10$min, BdHNe II occur with energies $10^{50}$--$10^{52}$erg and for $P_{\rm bin}\sim$hours, BdHN III occurs with energies below $10^{50}$erg. {In BdHNe II and III,} no BH is formed. The $1$--$1000$ms $ν$NS originates, in all BdHNe, the X-ray-optical-radio afterglows by synchrotron emission. The hypernova follows an independent evolution, becoming an SN Ic, powered by nickel decay, observable after the GRB prompt emission. We report $24$ SNe Ic associated with BdHNe. Their optical peak luminosity and time of occurrence are similar and independent of the associated GRBs. {From previously identified $380$ BdHN I comprising redshifts up to $z=8.2$, we analyze} four examples with their associated hypernovae. By multiwavelength extragalactic observations, we identify seven new Episodes, theoretically explained, fortunately not yet detected in galactic sources, opening new research areas. Refinement of population synthesis simulations is needed to map the progenitors of such short-lived binary systems inside our galaxy.

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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