Direct URCA process in neutron stars with strong magnetic fields
Direct URCA process in neutron stars with strong magnetic fields
复制标题
强磁场中子星的直接 URCA 过程
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
A. Pérez
中科院分区：
文献类型：
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作者：
L. Leinson;A. Pérez
我们计算了中子星中强磁化简并物质在 β 平衡下的直接 URCA 过程的发射率。我们表明，如果磁场足够大，使质子和电子被限制在其基朗道能级内，则质子浓度的无场阈值条件不再成立，并且直接 URCA 反应对任意质子浓度开放。直接 URCA 过程导致中子星快速冷却的早期阶段。这种情况使我们能够限制观测到的脉冲星内部的初始磁场。
We calculate the emissivity for the direct URCA process in strongly magnetized, degenerate matter in neutron stars, under β-equilibrium. We show that, if the magnetic field is large enough for protons and electrons to be confined to their ground Landau levels, the field-free threshold condition on proton concentration no longer holds, and direct URCA reactions are open for an arbitrary proton concentration. Direct URCA process leads to an early phase of fast neutron star cooling. This circumstance allows us to constrain the initial magnetic field inside observed pulsars.