A Systematic Study on the Rise Time–Peak Luminosity Relation for Bright Optical Transients Powered by Wind Shock Breakout
A Systematic Study on the Rise Time–Peak Luminosity Relation for Bright Optical Transients Powered by Wind Shock Breakout
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DOI：
10.3847/1538-4357/aba0ba
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发表时间：
2020-06
期刊：
影响因子：
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通讯作者：
A. Suzuki;T. Moriya;T. Takiwaki
中科院分区：
文献类型：
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作者：
A. Suzuki;T. Moriya;T. Takiwaki
许多源自恒星爆炸的天体物理瞬变都是由喷射物质与星周介质的碰撞提供动力，通过冲击耗散有效地产生热辐射。我们研究了这种相互作用驱动的瞬态如何分布在峰值辐射光度与上升时间相空间中。利用球对称性的耗时较少的一维模拟，我们计算了 500 多个具有不同星周质量和半径、喷射物质量和能量以及化学成分的模型。针对每个模拟光曲线测量峰值辐射光度、总辐射能量和相互作用驱动发射的上升时间。我们考虑如何将这些特征量确定为模型参数的函数，并讨论对观察到的（潜在）相互作用动力瞬变群体（例如 IIn 型超新星和快速蓝色光学瞬变）的可能影响。
A number of astrophysical transients originating from stellar explosions are powered by the collision of the ejected material with the circumstellar medium, which efficiently produces thermal radiation via shock dissipation. We investigate how such interaction-powered transients are distributed in the peak bolometric luminosity versus the rise time phase space. Taking advantage of less time-consuming one-dimensional simulations with spherical symmetry, we calculated more than 500 models with different circumstellar mass and radius, ejecta mass and energy, and chemical compositions. The peak bolometric luminosity, the total radiated energy, and the rise time of the interaction-powered emission are measured for each simulated light curve. We consider how these characteristic quantities are determined as a function of the model parameters and discuss possible implications for the observed populations of (potential) interaction-powered transients, such as Type IIn supernovae and fast blue optical transients.