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arXiv 1409.7750nucl-thastro-ph.HE
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中子星的电子-中子散射和输运性质

Electron-neutron scattering and transport properties of neutron stars

Bridget Bertoni, Sanjay Reddy, Ermal Rrapaj

摘要:

我们发现电子可以耦合到中子星中的中子激发,并发现这可以限制它们对致密物质输运性质的贡献,特别是剪切粘度。电子和中子之间的耦合是由地核中的质子和地壳中的离子引起的。我们计算了与高密度简并电子散射有关的运动学的有效电子-中子相互作用。我们使用这种相互作用来计算电子的热导率,电导率和剪切粘度在中子星内地壳,并在核心,我们认为正常和超流相的中子丰富的物质。在某些情况下,特别是当质子是超导和中子是在其正常的相位,我们发现,电子-中子散射可能是更重要的比以前考虑的其他散射机制。

英文摘要:

We show that electrons can couple to the neutron excitations in neutron stars and find that this can limit their contribution to the transport properties of dense matter, especially the shear viscosity. The coupling between electrons and neutrons is induced by protons in the core, and by ions in the crust. We calculate the effective electron-neutron interaction for the kinematics of relevance to the scattering of degenerate electrons at high density. We use this interaction to calculate the electron thermal conductivity, electrical conductivity, and shear viscosity in the neutron star inner crust, and in the core where we consider both normal and superfluid phases of neutron-rich matter. In some cases, particularly when protons are superconducting and neutrons are in their normal phase, we find that electron-neutron scattering can be more important than the other scattering mechanisms considered previously.

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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