论文标题
双重爆炸：IA型超新星的变化，由于核心不同，壳质量 - II：合成可观察物
Double detonations: variations in Type Ia supernovae due to different core and He shell masses -- II: synthetic observables
论文作者
论文摘要
亚chandrasekhar质量白色矮人的双重爆炸是IA型超新星型的有前途的爆炸情况，因此，表面氦壳中的爆炸会触发碳氧气核心的二次爆炸。最近的工作表明，低质氦壳模型会重现正常SNE IA的观察结果。我们为一系列壳和核心质量的双重爆炸爆炸场景进行了3D辐射转移模拟。我们发现光曲线广泛地能够重现SNE IA所示的宽度 - 光度关系的微弱端，但是，我们发现我们的所有模型都显示出极度红色，在正常的SNE IA中未观察到。这包括我们最低的大氦壳模型。我们在模型光谱中发现了清晰的Ti II吸收特征，这将导致分类为奇特的SNE IA，并通过单一离子化的CR和Fe-Peak元素在某些视线中覆盖线。我们的辐射转移模拟表明，这些爆炸模型仍然有望解释特殊的SNE IA。未来的完整非LTE模拟可以通过观察正常的SNE IA来改善这些爆炸模型的一致性。
Double detonations of sub-Chandrasekhar mass white dwarfs are a promising explosion scenario for Type Ia supernovae, whereby a detonation in a surface helium shell triggers a secondary detonation in a carbon-oxygen core. Recent work has shown that low mass helium shell models reproduce observations of normal SNe Ia. We present 3D radiative transfer simulations for a suite of 3D simulations of the double detonation explosion scenario for a range of shell and core masses. We find light curves broadly able to reproduce the faint end of the width-luminosity relation shown by SNe Ia, however, we find that all of our models show extremely red colours, not observed in normal SNe Ia. This includes our lowest mass helium shell model. We find clear Ti II absorption features in the model spectra, which would lead to classification as peculiar SNe Ia, as well as line blanketing in some lines of sight by singly ionised Cr and Fe-peak elements. Our radiative transfer simulations show that these explosion models remain promising to explain peculiar SNe Ia. Future full non-LTE simulations may improve the agreement of these explosion models with observations of normal SNe Ia.
