【摘要】：Ⅰa型超新星作為宇宙的"標(biāo)準(zhǔn)燭光"被用來測距并測定宇宙的膨脹歷史以及確定暗能量的性質(zhì).一般認(rèn)為Ⅰa型超新星可能源于接近1.4 M⊙碳氧白矮星的熱核爆炸,但其爆發(fā)機(jī)制及前身星的性質(zhì)還存在爭論.這使得Ⅰa超新星距離測量可能存在的一些系統(tǒng)誤差無法得到澄清.本文綜述了當(dāng)前Ⅰa型超新星的觀測多樣性特征以及相關(guān)的爆發(fā)機(jī)制和前身星模型.Ⅰa超新星的光譜和測光性質(zhì)的彌散不能用單一的模型單簡并或者雙簡并模型+幾何效應(yīng)來解釋,這表明可能有多種渠道產(chǎn)生這類爆發(fā).未來利用它們開展精確宇宙學(xué)研究需要對不同亞類的爆發(fā)進(jìn)行區(qū)分和認(rèn)證.
[Abstract]:Type I a supernova is used as the "standard candlelight" of the universe to measure distance, determine the expansion history of the universe and determine the properties of dark energy. It is generally believed that the type I a supernova may have originated from the thermal nuclear explosion of nearly 1.4 M _ (98) carbon oxygen white dwarf star, but the mechanism of the explosion and the properties of the predecessor star are still controversial. This makes it impossible to clarify some possible systematic errors in the measurement of the I a supernova distance. In this paper, the characteristics of observational diversity of type 鈪，

本文編號：2316906