论文标题
银河尘埃：龙卷风超新星残留候选者的远红外观察
A Galactic Dust Devil: far-infrared observations of the Tornado Supernova Remnant candidate
论文作者
论文摘要
我们使用Spitzer和Herschel的观测值呈现了候选超新星残留物（SNR）的多个区域内的复杂灰尘结构。我们使用点过程映射PPMAP，与5-36的天然望远镜梁相比，以8英寸的分辨率研究龙卷风中灰尘的分布。我们发现龙卷风的头部和尾部都有多个温度的复杂灰尘结构，范围为15至60k。头部凉爽的灰尘形成外壳，与无线电发射有一些重叠，这在X射线峰处笼罩着温暖的灰尘。类似于陆地沙质旋风，称为“尘埃魔鬼”，我们发现龙卷风中包含大量尘埃。假设Kappa_300的灰尘吸收系数= 0.56m^2 kg^1，我们可以得出16.7太阳能龙卷头的总尘埃质量，这可以通过在密集区域扩展的SNR扫除的星际材料来解释。龙卷风头的X射线，红外和无线电发射表明这是SNR。尾巴的起源尚不清楚，尽管我们建议在SNR中有一个X射线二进制嵌入的二进制二进制文件，该二进制是驱动器中的流出的流出。这种相互作用以类似于SNR W50和Microquasar SS433的方式形成螺旋尾巴结构。
We present complicated dust structures within multiple regions of the candidate supernova remnant (SNR) the `Tornado' (G357.7-0.1) using observations with Spitzer and Herschel. We use Point Process Mapping, PPMAP, to investigate the distribution of dust in the Tornado at a resolution of 8", compared to the native telescope beams of 5-36". We find complex dust structures at multiple temperatures within both the head and the tail of the Tornado, ranging from 15 to 60K. Cool dust in the head forms a shell, with some overlap with the radio emission, which envelopes warm dust at the X-ray peak. Akin to the terrestrial sandy whirlwinds known as `Dust Devils', we find a large mass of dust contained within the Tornado. We derive a total dust mass for the Tornado head of 16.7 solar masses, assuming a dust absorption coefficient of kappa_300 =0.56m^2 kg^1, which can be explained by interstellar material swept up by a SNR expanding in a dense region. The X-ray, infra-red, and radio emission from the Tornado head indicate that this is a SNR. The origin of the tail is more unclear, although we propose that there is an X-ray binary embedded in the SNR, the outflow from which drives into the SNR shell. This interaction forms the helical tail structure in a similar manner to that of the SNR W50 and microquasar SS433.
