论文标题

磁性硬X射线从轴突样粒子转换发射

Magnetar Hard X-Ray Emission from Axion-like Particle Conversion

论文作者

Fortin, Jean-François, Gratton, Marianne

论文摘要

我们探讨了将在磁铁核心产生的轴突状粒子(ALP)的可能性,然后将磁层中的磁层转换为光子,可以解释磁力硬X射线光谱。我们指出,这种情况还将为与磁铁加热有关的一些问题提供答案。确实,考虑到磁体具有:1)难以用已知机制来解释的硬X射线光谱; 2)迫使高核温度的大光子亮度; 3)高核温度暗示着大中微子发射; 4)与观察结果相矛盾的大型中微子发射率很小 - 用阿尔卑斯山解释硬X射线光谱可以降低核心温度,从而降低中微子的发射率,从而使较长的磁性寿命如观察结果所预期的。在这项工作中,我们针对具有极端亮度的三种磁场开始对这种情况进行研究,并得出结论,一般的想法可能值得详细研究。

We explore the possibility that axion-like-particles (ALPs), which would be produced in the core of magnetars and would then convert in the magnetosphere into photons, can explain magnetar hard X-ray spectra. We remark that this scenario would also provide answers to some questions related to magnetar heating. Indeed, considering that magnetars have: 1) hard X-ray spectra that are difficult to explain with known mechanisms; 2) large photon luminosities that force high core temperatures; 3) high core temperatures that imply large neutrino emissivities; 4) and large neutrino emissivities that lead to small magnetar lifetimes in contradiction to observations -- explaining the hard X-ray spectra with ALPs could decrease the core temperatures and thus the neutrino emissivities, allowing for longer magnetar lifetimes as expected from observations. In this work, we initiate the study of this scenario for three magnetars with extreme luminosities, and conclude that the general idea is likely worth investigating in more detail.

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