The latest eruption of the recurrent nova LMC 1968 was extensively observed by Swift with its X-ray Telescope instrument. A comparison with the Swift data set from the 2016 eruption shows that the X-ray evolution was remarkably similar just as the evolution of the optical photometry and spectroscopy was similar during previously observed eruptions. The only difference is a surprising decrease in the recurrence time. LMC 1968 is only the second nova for which Swift has observed the entire X-ray evolution more than once. At 50 kpc, it is close enough to be extensively observed in its next eruption.

中文翻译：

---

经常性新星LMC 1968的2016年和2020年爆发的X射线光曲线之间的相似性

斯威夫特（Swift）的X射线望远镜仪器广泛观测到了复发性新星LMC 1968的最新喷发。与2016年喷发的Swift数据集进行的比较表明，X射线的演化非常相似，就像先前观测到的爆发期间的光学测光和光谱学的演化相似。唯一的不同是重复时间的惊人减少。LMC 1968只是斯威夫特不只一次观察到整个X射线演化的第二颗新星。在50 kpc时，它足够接近，可以在下一次喷发时被广泛观察到。