Abstract

We consider the evolutionary status of the recently discovered long-period radio sources PSR J0901-4046, GLEAM-X J1627-52, and GPM J1839-10. It is hypothesized that all three sources are radio pulsars. Within the framework of standard scenarios, it is thought that for the pulsar mechanism to operate, it is necessary to exclude the penetration of external matter into the light cylinder, which corresponds to the ejector stage. We show that for realistic properties of the interstellar medium the 76-second pulsar J0901-4046 must be at this stage, whereas the sources GLEAM-X J1627-52 and GPM J1839-10 with periods \({\gtrsim}1000\) s can be at this stage only in the case of unrealistically high dipolar magnetic fields \({\gtrsim}10^{16}\) G. We also show that sources with periods \({\sim}100\) s and magnetic fields \({\lesssim}10^{13}\) G cannot be ejectors in a realistic interstellar medium. Thus, we predict that long-period radio pulsars with standard magnetic fields will not be discovered.

中文翻译：

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长周期射电脉冲星的演化现状

摘要

我们考虑最近发现的长周期射电源 PSR J0901-4046、GLEAM-X J1627-52 和 GPM J1839-10 的演化状态。假设所有三个源都是射电脉冲星。在标准场景的框架内，人们认为，为了使脉冲星机制运行，必须排除外部物质渗透到相当于喷射器级的光柱中。我们表明，对于星际介质的真实特性，76 秒脉冲星 J0901-4046 必须处于这个阶段，而源 GLEAM-X J1627-52 和 GPM J1839-10 的周期为\({\gtrsim}1000\) s只有在不切实际的高偶极磁场\({\gtrsim}10^{16}\) G 的情况下才能处于此阶段。我们还表明，周期为\({\sim}100\) s的源和磁场\({\lesssim}10^{13}\) G 不能成为现实星际介质中的喷射器。因此，我们预测具有标准磁场的长周期射电脉冲星将不会被发现。