The Persistence of Memory, or How the X-Ray Spectrum of SNR 0509–67.5 Reveals the Brightness of Its Parent Type Ia Supernova
The Persistence of Memory, or How the X-Ray Spectrum of SNR 0509–67.5 Reveals the Brightness of Its Parent Type Ia Supernova
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记忆的持久性，或者 SNR 0509–67.5 的 X 射线光谱如何揭示其母体 Ia 型超新星的亮度
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
E. Bravo
中科院分区：
文献类型：
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作者：
C. Badenes;J. Hughes;G. Cassam;E. Bravo
我们在最新的光回波光谱学结果的背景下研究了年轻的Ia型超新星遗迹0509-67.5的动力学和x射线光谱。我们的目标是利用钱德拉和xmm -牛顿对超新星遗迹的观测来估计超新星爆炸的动能，从而将0509-67.5的诞生事件置于昏暗到明亮的Ia型超新星序列中。我们的分析基于一维延迟爆轰模型的标准网格，以及超新星遗迹演化的流体动力学和x射线光谱计算。根据x射线光谱中O、Si、S和Fe发射的残余动力学和特性，我们得出结论，0509-67.5起源于400年前的一次明亮、高能量的Ia型爆炸，类似于SN 1991T。我们最好的模型有1.4 × 1051 erg的动能和合成0.97 M☉的56Ni。这些结果与光回波的年龄估计和光谱学非常吻合。因此，基于对Ia型超新星和它的超新星遗迹的详细定量分析，我们首次建立了两者之间的联系。
We examine the dynamics and X-ray spectrum of the young Type Ia supernova remnant 0509–67.5 in the context of the recent results obtained from the optical spectroscopy of its light echo. Our goal is to estimate the kinetic energy of the supernova explosion using Chandra and XMM-Newton observations of the supernova remnant, thus placing the birth event of 0509–67.5 in the sequence of dim-to-bright Type Ia supernovae. We base our analysis on a standard grid of one-dimensional delayed detonation explosion models, together with hydrodynamic and X-ray spectral calculations of the supernova remnant evolution. From the remnant dynamics and the properties of the O, Si, S, and Fe emission in its X-ray spectrum we conclude that 0509–67.5 originated ~400 yr ago from a bright, highly energetic Type Ia explosion similar to SN 1991T. Our best model has a kinetic energy of 1.4 × 1051 erg and synthesizes 0.97 M☉ of 56Ni. These results are in excellent agreement with the age estimate and spectroscopy from the light echo. We have thus established the first connection between a Type Ia supernova and its supernova remnant based on a detailed quantitative analysis of both objects.