富钛超新星遗迹仙后座A的一个天体物理模型
A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A
摘要：
富钛亚亮超新星是罕见的，挑战目前的SN核合成模型。我们提出了一个模型，在该模型中，从一个标准的超新星喷出物的第二次爆炸的中子星（夸克新星）的影响，导致spiritual反应，导致56镍破坏和44钛创建在正确的条件下。对天体产物的基本计算表明，两次爆发之间约5天的延迟再现了在Cas A中观测到的44 Ti丰度，并解释了由于56 Ni的破坏而导致的低光度。我们的结果可能有重要的影响，以及超亮超新星的光变曲线。
英文摘要：
Titanium-rich subluminous supernovae are rare and challenge current SN nucleosynthesis models. We present a model in which ejecta from a standard Supernova is impacted by a second explosion of the neutron star (a Quark-nova), resulting in spallation reactions that lead to 56Ni destruction and 44Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of ~ 5 days reproduces the observed abundance of 44Ti in Cas A and explains its low luminosity as a result of the destruction of 56Ni. Our results could have important implications for lightcurves of subluminous as well as superluminous supernovae.
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