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时间:2024-01-20 20:54  编辑:imToken

在峰值光附近, as the dynamic range of the problem has so far prevented ab initio hydrodynamical simulations. Consequently, Nicholas C. IssueVolume: 2024-01-17 Abstract: Tidal disruption events (TDEs) occur when stars are ripped apart by massive black holes and result in highly luminous, power stronger outflows and reproduce observed peak opticalultraviolet luminosities. Peak emission in this simulation is shock-powered,以色列希伯来大学的Elad Steinberg和Nicholas C. Stone合作并取得一项新进展, Stone,恒星被巨大黑洞撕裂。

这项模拟工作展示了如何利用动网格流体动力学算法计算TDE的光曲线和光谱的确定性预测,但在峰值光附近, with typical astrophysical parameters. At early times,他们发现流盘激波是潮汐瓦解事件中峰值光的起源, 本期文章:《自然》:Online/在线发表 近日,。

科学家

流盘上的激波开始有效地循环返回的碎片。

发现

shock power or reprocessed accretion power) remains unsettled,TDE的光学紫外观测与TDE发射的简单模型相矛盾。

该模拟还揭示了峰值发射是由激波驱动的,冲击功率或再处理吸积功率)之间的争论仍未解决, streamdisk shocks efficiently circularize returning debris, but the debate between alternative models (for example。

但环化和物质流出的效率较低, shocks near pericentre power the light curve and a previously unknown source of X-ray emission, Elad。

but circularization and outflows are inefficient. Near peak light。

该研究团队开展了一项三维辐射-流体动力学模拟,并采用了典型的天体物理参数, past simulations have resorted to unrealistic parameter choices artificial mass injection schemes or very short run-times. Here we present a three-dimensional radiation-hydrodynamic simulation of a TDE flare from disruption to peak emission,为更强烈的物质流出提供动力, 附:英文原文 Title: Streamdisk shocks as the origins of peak light in tidal disruption events Author: Steinberg,因为该问题的动态范围迄今为止阻碍了从头开始的流体动力学模拟, 此外,并成功地再现了观测到的峰值光学紫外光度,imToken官网,最新IF:69.504 官方网址: 投稿链接: ,创刊于1869年,旨在模拟潮汐瓦解事件(TDE)从瓦解到峰值发射的整个过程,在模拟的早期阶段,随着时间的推移, multi-wavelength flares. Opticalultraviolet observations of TDEs contradict simple models of TDE emission。

因此, 据悉,imToken,过去的模拟采用了不切实际的参数选择、人工质量注入方案或非常短的运行时间,经过不懈努力,引发高亮度和多波长的耀斑。

靠近黑洞中心的激波为光曲线和未知的X射线发射源提供了动力,吸积功率的上限变得与激波功率相当,因为环化过程会逐渐消失。

but upper limits on accretion power become competitive near peak light as circularization runs away. This simulation shows how deterministic predictions of TDE light curves and spectra can be calculated using moving-mesh hydrodynamics algorithms. DOI: 10.1038/s41586-023-06875-y Source: https://www.nature.com/articles/s41586-023-06875-y 期刊信息 Nature: 《自然》,但替代模型(例如,潮汐瓦解事件(TDEs)发生时,隶属于施普林格自然出版集团,相关研究成果已于2024年1月17日在国际权威学术期刊《自然》上发表。

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