Brightness and diameters for extragalactic SNRs

This paper examines relations between the radio surface brightness Sigma and the diameter D (also known as Sigma-D relations) for a sample of extragalactic supernova remnants...本文针对一组河外超新星遗迹样本，探讨了射面亮度（radio surface brightness，Σ）与直径D之间的相关性，该相关性亦被称为Σ-D关系。