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arXiv 2401.04568hep-phastro-ph.HE
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手征各向异性转换引起的脉冲星踢

Pulsar Kick by the Chiral Anisotropy Conversion

Kenji Fukushima, Chengpeng Yu

AI总结:

本文提出手征各向异性转换机制,通过中微子在电子轴矢量电流上的散射解释原中子星加速,在强磁场与各向异性条件下可产生符合典型脉冲星踢观测的速度。

摘要:

我们讨论了一种由手征分离效应辅助的原中子星加速新机制,该效应在致密介质中诱导出轴矢量电流。我们考虑了中微子散射电子背景轴矢量电流的过程。我们证明了动量空间中磁场或密度的各向异性对于非零反冲是必不可少的,我们将此机制称为手征各向异性转换。假设强磁场 $B \simeq 10^{12}$ T 及约 10% 的各向异性,我们发现手征各向异性转换可产生典型脉冲星踢量级的速度,即 $v_{\mathrm{kick}} \gtrsim 1000$ km/s。

英文摘要:

We discuss a novel mechanism for the proto-neutron star acceleration assisted by the chiral separation effect which induces an axial vector current in a dense medium. We consider the process of neutrinos scattering off the background axial vector current of electrons. We show that anisotropy of either magnetic field or density in momentum space is essential for nonzero recoil and we call this mechanism the chiral anisotropy conversion. Assuming a strong magnetic field $B \simeq 10^{12}$ T and anisotropy by $\sim 10\%$, we find that the chiral anisotropy conversion can yield the velocity of order of typical pulsar kicks, i.e., $v_{\mathrm{kick}} \gtrsim 1000$ km/s.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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