It is also a circumbinary planet, orbiting around a binary system composed of the pulsar PSR B1620-26 a and the White Dwarf WD B1620-26.
Methuselah同时也是一颗circumbinary行星，它围绕着一个双星系统旋转，这个双星系统由脉冲星PS r B1620 - 26 a和白矮星wd B1620 - 26组成。
They suggest that these similarities between a known millisecond pulsar and a known X-ray binary provide the long-sought link between these types of objects.
他们认为，一个已知的毫秒脉冲星与一个已知的X射线双星之间的这种相似性，为我们提示了这两类天体间长期未知的内在联系。
An X-ray binary system has been formed, and the neutron star has made the crucial second step toward becoming a millisecond pulsar.
射线双星就这样形成了，于是这颗中子星就向成为毫秒脉冲星迈出了关键的第二步。
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