论文标题
部分可观测时空混沌系统的无模型预测
Radio detection of an elusive millisecond pulsar in the Globular Cluster NGC 6397
论文作者
论文摘要
我们报告了新的5.78 ms-period毫秒Pulsar（MSP），PSR J1740-5340B（NGC 6397b），在用Parkes射线望远镜发现的黯淡二进制系统中（现在也称为Murriyang），并在澳大利亚（Murriyang），并确认了Meerkat the Meerkat Telyscope，并确认为Arive telesscope in the Meerkat telescope。测得的轨道周期为1.97天，是球状簇（GC）的所有远程二进制文件中最长的，并且与一致的X射线源U18一致，以前建议是“隐藏的MSP”。我们在NGC 6397B的无线电静止时期期间的XMM-Newton观察结果未检测到X射线耀斑。 NGC 6397b是在伴侣恒星离开主序列后的转移初始阶段的过渡MSP或黯然失色的二进制阶段。 NGC 6397B的发现可能揭示了一个极为微弱且严重遮盖的二元脉冲星的亚组，从而为核心collapsed的GC中的二进制中子星的明显缺乏提供了合理的解释，以及对GCS的演变的关键约束。
We report the discovery of a new 5.78 ms-period millisecond pulsar (MSP), PSR J1740-5340B (NGC 6397B), in an eclipsing binary system discovered with the Parkes radio telescope (now also known as Murriyang), Australia, and confirmed with the MeerKAT radio telescope in South Africa. The measured orbital period, 1.97 days, is the longest among all eclipsing binaries in globular clusters (GCs) and consistent with that of the coincident X-ray source U18, previously suggested to be a 'hidden MSP'. Our XMM-Newton observations during NGC 6397B's radio quiescent epochs detected no X-ray flares. NGC 6397B is either a transitional MSP or an eclipsing binary in its initial stage of mass transfer after the companion star left the main sequence. The discovery of NGC 6397B potentially reveals a subgroup of extremely faint and heavily obscured binary pulsars, thus providing a plausible explanation to the apparent dearth of binary neutron stars in core-collapsed GCs as well as a critical constraint on the evolution of GCs.
