论文标题
大型麦哲伦云中的新的Askap Radio Supernova残留物和候选人
New ASKAP Radio Supernova Remnants and Candidates in the Large Magellanic Cloud
论文作者
论文摘要
我们提出了一个新的澳大利亚平方公里阵列探路者（ASKAP）样本，用于大麦芽云（LMC）中的14个无线电超新星残余（SNR）候选者。该新样本与已知的较旧，较大和低表面亮度LMC SNR的数量显着增加。我们对每个对象进行了多频搜索，并在这14个SNR候选物中的几个中发现了光学的痕迹，偶尔会X射线发射。这14个SNR候选者之一（MCSNR J0522-6543）具有多频性属性，强烈表明了真正的SNR。我们还研究了20个先前建议的LMC SNR候选物的样本，并确认MCSNR J0506-6815的SNR性质。我们检测到较低的表面亮度SNR候选物可能是由大量祖细胞（可能是周围OB恒星）组合的，可能是由冲击波和强风的组合形成的。在较低的密度环境中，还发现了一些新的SNR候选物，其中SNE类型IA在先前发掘的星际介质（ISM）内爆炸。
We present a new Australian Square Kilometre Array Pathfinder (ASKAP) sample of 14 radio Supernova Remnant (SNR) candidates in the Large Magellanic Cloud (LMC). This new sample is a significant increase to the known number of older, larger and low surface brightness LMC SNRs. We employ a multi-frequency search for each object and found possible traces of optical and occasionally X-ray emission in several of these 14 SNR candidates. One of these 14 SNR candidates (MCSNR J0522-6543) has multi-frequency properties that strongly indicate a bona fide SNR. We also investigate a sample of 20 previously suggested LMC SNR candidates and confirm the SNR nature of MCSNR J0506-6815. We detect lower surface brightness SNR candidates which were likely formed by a combination of shock waves and strong stellar winds from massive progenitors (and possibly surrounding OB stars). Some of our new SNR candidates are also found in a lower density environments in which SNe type Ia explode inside a previously excavated interstellar medium (ISM).
