论文标题
SN 1961V：脉动配对稳定超新星
SN 1961V: A Pulsational Pair-Instability Supernova
论文作者
论文摘要
我们探索了各种模型，其中SN〜1961V是有史以来最神秘的超新星（SNE）之一，是脉动式配对超新星（PPISN）。成功的模型重现了主要爆发的降压光曲线，在某些情况下，发射前一年和几年后发射。所有型号均具有富含氦气的喷射，散装氢化速度在2000 km s $^{ - 1} $附近，总体动能从4到8 $ \ times 10^{50} $ erg。每个人最终都留下了黑洞残留物。探索了PPISN模型的三个子类，每种模型都有两种不同选择的氦气燃烧后。碳是重要的参数，因为壳碳燃烧会削弱爆炸。这三个子类对应于SN〜1961V及其直接余辉的情况：a）一个事件； b）两个或多个数十年或几个世纪以来的两个或多个脉冲事件中的第一个；或c）已经发生了一年或更长时间的复杂爆炸的后一个阶段。对于低碳案例，SN〜1961V祖细胞的主要序列质量将为100至115 \ msun；其前SN氦核质量为45至52 \ msun；最终的黑洞质量为40至45 \ msun。对于高碳情况，这些值大约增加了20至25％。在某些PPISN型号中，$ \ sim10^{40} $ erg s $^{ - 1} $类似星星的对象仍然可以在SN〜1961V的网站上闪耀，但更有可能被大量积聚的黑洞所取代。
We explore a variety of models in which SN~1961V, one of the most enigmatic supernovae (SNe) ever observed, was a pulsational pair-instability supernova (PPISN). Successful models reproduce the bolometric light curve of the principal outburst and, in some cases, the emission one year before and several years afterward. All models have helium-rich ejecta, bulk hydrogenic velocities near 2000 km s$^{-1}$, and total kinetic energies from 4 to 8 $\times 10^{50}$ erg. Each eventually leaves behind a black hole remnant. Three subclasses of PPISN models are explored, each with two different choices of carbon abundance following helium burning. Carbon is an important parameter because shell carbon burning can weaken the explosion. The three subclasses correspond to situations where SN~1961V and its immediate afterglow were: a) a single event; b) the first of two or more pulsational events separated by decades or centuries; or c) the latter stages of a complex explosion that had already been going on for a year or more. For the low carbon case, the main sequence mass for SN~1961V's progenitor would have been 100 to 115 \Msun; its pre-SN helium core mass was 45 to 52 \Msun; and the final black hole mass, 40 to 45 \Msun. For the high-carbon case, these values are increased by roughly 20 to 25\%. In some PPISN models, a $\sim10^{40}$ erg s$^{-1}$ star-like object could still be shining at the site of SN~1961V, but it has more likely been replaced by a massive accreting black hole.
