One puzzling aspect of the image is the lack of evidence for thin filaments of high energy X-ray emission, thought to be an important site for cosmic ray acceleration in supernova remnants.

• 这张图片令人困惑的一点是，其中缺乏高能X射线辐射的精细纤维结构迹象，人们认为这样的结构是超新星遗迹中宇宙线加速的重要场所。