论文标题
Chandra和Nustar捕获的强烈相互作用的IB SN 2014C的六年发光X射线排放
Six years of luminous X-ray emission from the strongly interacting type-Ib SN 2014C captured by Chandra and NuSTAR
论文作者
论文摘要
我们在其演变的第一个$ \ sim $ 2307 d中介绍了第一个协调的柔软和硬性0.3-80 KEV X射线运动。 SN 2014c最初似乎是普通的IB爆炸，但演变成$ \ sim1 \ rm {yr} $的强烈相互交互的氢型IIN SN。我们观察到与X射线频谱上的密集介质相互作用的签名，这表明存在$ \ sim 1-2 \ rm {m} _ {\ odot} $ shell in $ \ sim6 \ sim6 \ times10^{16} {16} \ rm {cm {cm {cm} $。这一发现挑战了当前对富有贫于氢的核心循环祖细胞进化的理解。解释这些观察结果的潜在场景包括（i）在爆炸之前的几个世纪以来，祖细胞恒星对氢包膜的射出； （ii）快速狼射线（WR）星形风与红色超级巨型（RSG）阶段的缓慢而密集的风相互作用，而WR阶段异常短。
We present the first coordinated soft and hard 0.3-80 keV X-ray campaign of the extragalactic supernova SN 2014C in the first $\sim$2307 d of its evolution. SN 2014C initially appeared to be an ordinary type Ib explosion but evolved into a strongly-interacting hydrogen-rich type IIn SN over $\sim1 \rm{yr}$. We observed signatures of interaction with a dense medium across the X-ray spectrum, which revealed the presence of a $\sim 1-2 \rm{M}_{\odot}$ shell of material at $\sim6\times10^{16} \rm{cm}$ from the progenitor. This finding challenges current understanding of hydrogen-poor core-collapse progenitor evolution. Potential scenarios to interpret these observations include (i) the ejection of the hydrogen envelope by the progenitor star in the centuries prior to the explosion; (ii) interaction of the fast Wolf-Rayet (WR) star wind with the slow, dense wind of the Red Super Giant (RSG) phase, with an anomalously short WR phase.
