Observational Studies on Supernova Shock Breakouts

我们利用1米Kiso Schmidt望远镜及其宽视场光学成像仪Kiso Wide Field Camera （KWFC）进行了一项名为Kiso supernova survey （KISS）的超新星调查。KISS的独特之处在于其间隔1小时的高节奏观测。KISS的主要目的是在光学上首次发现超新星的激波爆发现象，这种现象在理论上已经预测了很长时间。通过比较激波爆发的光曲线，我们完善了我们的理论模型，并利用它来探索宇宙早期的恒星形成历史。在本研究中，我们首先完成了KISS必不可少的KWFC过滤交换系统，然后从2012年4月开始进行KISS观测。我们在调查开始前发现了大约40颗超新星，并向中央天文电报局报告了7颗新的超新星。我们没有发现突发性休克，但成功地建立了自动数据缩减系统和快速随访框架，这对本研究至关重要。我们计划使用8.2米的斯巴鲁望远镜和它的大视场成像仪，supprime - cam和Hyper supprime - cam进行观测，以发现遥远的冲击爆发，但由于他们的一些麻烦，我们的观测被取消了。

We carried out a supernova survey called Kiso Supernova Survey (KISS) using 1-m Kiso Schmidt telescope and its wide-field optical imager, Kiso Wide Field Camera (KWFC). The uniqueness of KISS is its high cadence observation of 1-hour interval. The main purpose of KISS is to the first optical discovery of a shock breakout phenomenon of a supernova which has been predicted theoretically for a long time. By comparing of a light curve of a shock breakout, we sophisticate our theoretical model and utilize it to explore cosmic star formation history up to the early universe. In this study, we first completed the filter exchanger system for KWFC which is indispensable for KISS and then started the KISS observations from April 2012. We discovered about 40 supernovae as expected before the survey started and reported 7 new supernovae to the Central Bureau for Astronomical Telegrams. We could not discover shock breakouts but succeeded in establishing automatic data reduction system and quick follow-up framework which is essential for this study. We were planning to conduct observations using the 8.2-m Subaru telescope and its wide-field imagers, Suprime-Cam and Hyper Suprime-Cam for distant shock breakout discoveries but our observations were cancelled due to some troubles of them.