大麦云云AKARI IRC巡天中的超新星遗迹
Supernova Remnants in the AKARI IRC Survey of the Large Magellanic Cloud
摘要：
利用AKARI IRC对大麦云云（LMC）的近中红外观测，对超新星遗迹进行了研究。大麦哲伦星云的调查使用AKARI上的红外照相机（IRC）在以3、7、11、15和24 \micron为中心的五个波段中观察到大约10平方度的大麦哲伦星云区域。测区信噪比为21个，约为已知LMC信噪比的一半。我们系统地检查了AKARI图像，并确定了8个具有可区分红外发射的SNR。所有这些都在$\gtrsim 10$ \micron检测到，有些也在3和7 \micron检测到。我们介绍他们的AKARI图像和通量。在11/15 \micron与15/24 \micron的色-色图中，SNR似乎沿着修正的黑体曲线排列，表示温度在90和190 K之间的尘埃的热发射。24个\micron与SNRs的X射线通量有很好的相关性。研究还发现，即使24 \micron和射电通量之间没有直接的物理联系，它们之间也有很好的相关性。我们考虑了在单个SNR中检测到的中红外发射的起源。我们的结论是，中红外发射在五个信噪比，显示类似的X射线的形态主要是由热尘埃加热的X射线发射等离子体的热发射。它们的15/24 \micron色温通常高于斯皮策24/70 \micron色温，这表明单温度尘埃模型不能描述SNR的全光谱能量分布（SED）。这也意味着，我们的理解是必不可少的全SED估计粉尘破坏率的谷物信噪比冲击。
英文摘要：
We present the near- to mid-infared study of supernova remnants (SNRs) using the AKARI IRC Survey of the Large Magellanic Cloud (LMC). The LMC survey observed about a 10 square degree area of the LMC in five bands centered at 3, 7, 11, 15, and 24 \micron using the Infrared Camera (IRC) aboard AKARI. The number of SNRs in the survey area is 21, which is about a half of the known LMC SNRs. We systematically examined the AKARI images and identified eight SNRs with distinguishable infrared emission. All of them were detected at $\gtrsim 10$ \micron and some at 3 and 7 \micron, too. We present their AKARI images and fluxes. In the 11/15 \micron versus 15/24 \micron color-color diagram, the SNRs appear to be aligned along a modified blackbody curve, representing thermal emission from dust at temperatures between 90 and 190 K. There is a good correlation between the 24 \micron and X-ray fluxes of the SNRs. It was also found that there is a good correlation between the 24 \micron and radio fluxes even if there is no direct physical connection between them. We considered the origin of the detected mid-infrared emission in individual SNRs. We conclude that the mid-infrared emissions in five SNRs that show morphologies similar to the X-rays are dominated by thermal emission from hot dust heated by X-ray emitting plasma. Their 15/24 \micron color temperatures are generally higher than the Spitzer 24/70 \micron color temperatures, which suggests that a single-temperature dust model cannot describe the full spectral energy distribution (SED) of the SNRs. It also implies that our understanding of the full SED is essential for estimating the dust destruction rate of grains by SNR shocks.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
