具有核子超流性的非平衡β过程的中微子发射
Neutrino Emissivity of Non-equilibrium beta processes With Nucleon Superfluidity
摘要：
研究了核子超流性对非平衡β过程中微子发射率的影响。计算了$npe$物质中三种核子超流性的直接和修正Urca过程的约化因子。由于解析解是不可能的，所以给出了数值结果。我们发现，超流影响的行为是密切相关的化学偏离β平衡。对于小的化学偏离，超流折减因子几乎只取决于间隙，而几乎不受偏离的影响。当偏离足够大时，它会迅速增强中微子的发射率。“增强”发射的开始具有一些相应的阈值，这些阈值似乎与能隙与化学偏离的比率有关。
英文摘要：
We investigate the influence of nucleon superfluidity on the neutrino emissivity of non-equilibrium beta processes. Calculations are performed of the reduction factors for direct and modified Urca processes with three types of nucleon superfluidity in $npe$ matter. The numerical results are given since the analytical solution is impossible. We find that the behavior of the superfluid influence is closely related to the chemical departure from beta equilibrium. For small chemical departure, the superfluid reduction factor almost only depends on the gap but is hardly affected by the departure. While for the departure large enough, it rapidly enhances the neutrino emissivity. The onset of the "enchanced" emission has some corresponding thresholds which seem to be linked to the ratio of the energy gap to the chemical departure.
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