超新星遗迹与银河系旋臂结构

SUPERNOVA REMNANTS AND SPIRAL STRUCTURE OF THE GALAXY

从分子云演化的过程来讨论银河系中可能存在的超新星遗迹数目．对银河系分子云的观测已经得到了许多可靠的数据．如果这一研究结果在分子云方面能使理论值和观测值相匹配，那么由此导得的超新星事件结果也有一定的可靠性．结果表明，在内银河系中，可能存在的超新星遗迹约为（７７５±１２）τ５．旋臂结构并不会提高超新星的诞生率，它仅使超新星遗迹的分布有所变化，即在旋臂区域增加，而在臂间区域减少．

The supernova remnants in our Galaxy are studied on the basis of the evolution of molecular clouds. From the CO observations, a lot of reliable data on molecular clouds have been derived. If the author's theoretical results can match the observed ones, his conclusions about supernova remnants based on such observations will be convincing. It is shown that the possible supernova remnants in the inner Galaxy are (755±12) τ 5. The spiral structure will make more SNRs appear in the arm region rather than enhance the productivity of SNRs on the global scale.